Use App
Home
Categories
City Plants Application
English
English
繁體中文
日本語
Español
Français
Deutsch
Pусский
Português
Italiano
한국어
Nederlands
العربية
Svenska
Polskie
ภาษาไทย
Bahasa Melayu
email
Your free 7-day Premium hasn’t been claimed yet. Click to claim.
more icon close icon
care_about care_about
About
care_basic_guide care_basic_guide
Basic Care
care_advanced_guide care_advanced_guide
Advanced Care
care_seasonal_tips care_seasonal_tips
Seasonal Tips
care_pet_and_diseases care_pet_and_diseases
Pests & Diseases
care_more_info care_more_info
More Info
care_faq care_faq
FAQ
care_related_plants care_related_plants
Related Plants
Home > Plant Care Guide > Moonlight Cactus

How to care Moonlight Cactus

Moonlight cactus (Cereus spegazzinii) is a plant species native to Brazil, Argentina, and Bolivia. The moonlight cactus is widely distributed in the wild where it grows at the edges of forests and is not considered endangered. This species is often grown in pots and rocky gardens.
symbolism

Symbolism

Maternal love or warmth
Water
Water
Every 3 weeks
Sunlight
Sunlight
Full sun
Moonlight cactus
Moonlight cactus
plant_diagnosis plant_diagnosis
Plant Diagnosis
Diagnose and revive your plant. 10,000,000+ plants helped
reminders reminders
Reminders
A custom schedule to meet your plants’ needs
light_meter light_meter
Light Meter
Find the best growing location for your plant baby
plant_finder plant_finder
Plant Finder
Find plants that are right for your skill level, site, lighting, etc
care_basic_guide

Basic Care Guide

Cultivation:WaterDetail

Water

Moonlight cactus is a drought-tolerant plant that does not require frequent watering. Water thoroughly when the soil is completely dry. When potted, water slowly, wait for water to flow out the bottom, and then pour the excess water from the tray to avoid water accumulation.
Spring, summer, and fall are its growing seasons. Water once or twice a week to keep the soil slightly wet. In winter, water less; just keep the soil from drying excessively; usually once a week. Besides, water with rainwater or distilled water rather than tap water.
Tap water contains a lot of calcium, magnesium, and other mineral salts. Long-term use tends to cause soil compaction. Avoid splashing water on its stem when watering to prevent rotting.

Water

Water when completely dry
Moonlight cactus is adapted to warm, dry conditions with plenty of sunlight. The most important consideration in watering Moonlight cactus is to avoid overwatering. You can let it get quite dry before watering again. It is always better to give this type of plant too little water over too much.The original habitat of Moonlight cactus is relatively dry with little rain, but when it rains, the soil will be thoroughly moistened. So you can mimic this situation by bottom-watering your plant when the soil is totally dry. Deep soil bathing is better than frequent light watering for Moonlight cactus .
There’s not a hard-and-fast rule for how often to water Moonlight cactus . The best way to determine this is to check the soil and only water when it’s bone dry. You can either stick your finger in the pot or use a moisture meter to check the soil below the surface. When you plant it in a deep pot, you can do this with a stick or chopstick. If it feels even a little bit moist, wait a few days and check it again.
Most people will need to water Moonlight cactus about every two weeks in summer and once a month in winter, There are several environmental conditions that will affect how your Moonlight cactus needs to be watered, including the container size, soil type, temperature, and humidity.
First off, the container and soil you use will determine how often to water and how much water to use each time. Be sure you use a container with plenty of drainage holes in the bottom so extra water can escape the pot. A small container has less room for soil, meaning it won’t hold as much moisture, while a larger pot will stay wet longer and need to be watered less often. It’s important not to keep your Moonlight cactus in an oversized pot as this can easily lead to overwatering. When repotting, move to just one size larger than the current container. A shallow container works better than a deep one, since Moonlight cactus s have shallow root systems.
Moonlight cactus will need to be watered less often in winter and more often in the active growing season in spring and autumn. During the winter, growth slows down considerably and the plant isn’t using much energy or water. There is less water lost to evaporation in cooler winter air, meaning that soil stays wet for much longer than it would in the summer.
Avoid overwatering
The symptoms of overwatering are yellow, swollen, and translucent leaves that may even burst open from being over-full with water. If the problem continues without being treated, leaves might turn brown or black, and fall off the plant at the slightest touch. Be sure to check the soil to determine if overwatering is the culprit, as some other issues can cause similar symptoms.
Overwatering is dangerous to Moonlight cactus and can be fatal to your plant if you don’t remedy the situation. Too much moisture over time leads to root rot, which prevents the roots from being able to absorb nutrients and water from the soil. Root rot occurs when wet conditions allow fungi and bacteria to flourish in the soil and feed on roots. When you find that it's overwatered, you'd better change the growing conditions, place it somewhere with more air ventilation and adjust water frequency, for example.
It’s a bit difficult (but not impossible) to save an overwatered plant. The key is catching it early before a lot of damage has occurred. If the roots become rotten, it is likely to kill the entire plant. If you suspect you have overwatered your Moonlight cactus , the first step is to remove it from its pot and check the roots and soil.
After removing the plant from its pot, gently remove wet soil from around the roots and then rinse them clean in room-temperature water. This helps with removing fungus that might be lurking in the soil and allows you to get a better sense of how healthy the roots are. If your plant has already developed root rot, you will see roots that are dark brown or black, soft, mushy, or slimy.
Continue reading in our app - it's better
A database of 400,000+ plants and unlimited guides at your fingertips...
qrcode
Scan the QR code with your phone camera to download the app
close
Cultivation:WaterDetail
waterreminders

Never miss a care task again!

Plant care made easier than ever with our tailor-made smart care reminder.
What should I do if I water my Moonlight cactus too much or too little?
Underwatered Moonlight cactus
Moonlight cactus and other succulents can endure long periods without water, so it’s unusual to find one of these suffering from underwatering. But, if you somehow forgot about your plant and neglected to water it for a month or more, you’ll probably find your Moonlight cactus looking thirsty or with some leaf damage from lack of watering.
It is very easy to identify an underwatered Moonlight cactus. The leaves will look shriveled, dry, and flat. Some may have dried up completely, turned brown and crispy, or dropped off the plant, starting with the lower leaves and moving upward as the dry conditions continue. And of course, the soil will be completely dried out.
If your Moonlight cactus is thirsty and underwatered, give it plenty of water as soon as possible. Submerging the pot entirely in water for about 5-10 minutes is a good way to make sure the soil and plant are rehydrated properly. When you feel a sense of moisture on the surface of the soil with your finger, it means the watering is done properly. If there are dried out leaves still attached, go ahead and pluck them off to make room for new growth.
Overwatered Moonlight cactus
Overwatering is dangerous to Moonlight cactus and can be fatal to your plant if you don’t remedy the situation. Too much moisture over time leads to root rot, which prevents the roots from being able to absorb nutrients and water from the soil. Root rot occurs when wet conditions allow fungi and bacteria to flourish in the soil and feed on roots. When you find that it's overwatered, you'd better change the growing conditions, place it somewhere with more air ventilation and adjust water frequency, for example.
The symptoms of overwatering are yellow, swollen, and translucent leaves that may even burst open from being over-full with water. If the problem continues without being treated, leaves might turn brown or black, and fall off the plant at the slightest touch. Be sure to check the soil to determine if overwatering is the culprit, as some other issues can cause similar symptoms.
It’s a bit difficult (but not impossible) to save an overwatered plant. The key is catching it early before a lot of damage has occurred. If the roots become rotten, it is likely to kill the entire plant. If you suspect you have overwatered your Moonlight cactus, the first step is to remove it from its pot and check the roots and soil.
After removing the plant from its pot, gently remove wet soil from around the roots and then rinse them clean in room-temperature water. This helps with removing fungus that might be lurking in the soil and allows you to get a better sense of how healthy the roots are. If your plant has already developed root rot, you will see roots that are dark brown or black, soft, mushy, or slimy.
If the majority of the roots are already affected by root rot, it may not be possible to save the plant. In this case, it is best to remove any healthy leaves and try to use these to propagate a new Moonlight cactus. Luckily, this plant is easy to propagate even from a single leaf. If, on the other hand, only a portion of the roots have succumbed to rot and other healthy roots still remain, there is a chance it can be saved.
Use a sterilized cutting tool to remove any unhealthy-looking roots. Once you're left with only the firm, pale roots, it’s a good idea to dip them in a fungicide to kill off any remaining spores. After that you can repot your Moonlight cactus in fresh, free-draining potting soil. While this does not always work to save a succulent with root rot, in most cases this plant will be able to make a full recovery and will put out new growth starting in the next growing season.
Read More more
Free
How often should I water my Moonlight cactus?
There’s not a hard-and-fast rule for how often to water Moonlight cactus. The best way to determine this is to check the soil and only water when it’s bone dry. You can either stick your finger in the pot or use a moisture meter to check the soil below the surface. When you plant it in a deep pot, you can do this with a stick or chopstick. If it feels even a little bit moist, wait a few days and check it again.
Most people will need to water Moonlight cactus about every two weeks in summer and once a month in winter, but there are several factors that can change the frequency. The section below lists some considerations that can help you to determine how often to water.
Read More more
lock
What should I consider when watering my Moonlight cactus?
There are several environmental conditions that will affect how your Moonlight cactus needs to be watered, including the container size, soil type, temperature, and humidity.
First off, the container and soil you use will determine how often to water and how much water to use each time. Be sure you use a container with plenty of drainage holes in the bottom so extra water can escape the pot. A small container has less room for soil, meaning it won’t hold as much moisture, while a larger pot will stay wet longer and need to be watered less often. It’s important not to keep your Moonlight cactus in an oversized pot as this can easily lead to overwatering. When repotting, move to just one size larger than the current container. A shallow container works better than a deep one, since Moonlight cactus has shallow root systems.
Moonlight cactus will need to be watered less often in winter and more often in the active growing season in spring and autumn. During the winter, growth slows down considerably and the plant isn’t using much energy or water. There is less water lost to evaporation in cooler winter air, meaning that soil stays wet for much longer than it would in the summer.
This also applies to the general climate around your home. If you live in a humid location with a lot of rain, you will need to water less often than if you live in a dry, arid climate. Remember that conditions at the same geographic location can vary significantly with the season and the use of indoor heating and air conditioning.
Outdoor Planting
If Moonlight cactus is planted in the ground, after establishing a root system, it shouldn’t need supplemental water beyond what it receives through precipitation and dew. But if there is a long dry period, you may want to water occasionally. In other areas where Moonlight cactus can only be grown in a container, this plant can be moved outside in the spring and summer when the temperature is proper and then brought back inside when temperatures start to drop. A potted Moonlight cactus kept outside usually needs more water than the same plant kept indoors, because there is a lot more sun exposure even on a shaded porch.
Read More more
lock
How to water Moonlight cactus?
The best way to water Moonlight cactus is to soak it thoroughly and then allow it to dry out before it gets watered again. Since this plant is somewhat drought tolerant, you can let it get quite dry before watering again. It is always better to give this type of plant too little water over too much.
When you water, make sure the soil gets thoroughly soaked throughout the whole pot. Don’t pour the water in just one spot, but rather try to go around the whole rim of the planter to be sure that it has a chance to get wet on all sides of the plant. The correct amount of water will depend on the size of your container and how much water your soil absorbs. Give your Moonlight cactus enough water that it drains out from the drainage holes and then (ideally) leave the drained water in the saucer for about 20-30 minutes to absorb into dry pockets of soil. After that, discard any excess water that’s still in the saucer to avoid the soil getting waterlogged.
Bottom-watering is also an excellent method for the Moonlight cactus, as you can be sure that the soil gets thoroughly moistened. This process involves placing the pot into a saucer of water and allowing the soil to absorb moisture through the drainage holes. You will know that the soil has absorbed enough water when the top layer is moist. This takes a bit more time than top-watering, but is almost foolproof in getting an even distribution of water throughout the pot.
The original habitat of Moonlight cactus is relatively dry with little rain, but when it rains, the soil will be thoroughly moistened. So you can mimic this situation by bottom-watering your plant when the soil is totally dry. Deep soil bathing is better than frequent light watering for Moonlight cactus.
Read More more
lock
left right
Cultivation:FertilizerDetail

Fertilizer

In growing seasons (namely spring, summer and fall), fertilize moonlight cactus once a month with liquid fertilizer. No fertilizer is required in winter. A small amount of slow-release fertilizer can be well mixed into the soil when repotting in spring or fall.
Use nitrogen fertilizer during seedling and phosphate-potassium fertilizer before and after blooming. The fertilizer concentration should be as low as possible. It would be better to apply low-concentrate fertilizer several times rather than to use a high concentration. If the base is yellow and grows slowly, the cause may be excessive fertilizer, and fertilization should be immediately stopped.

Fertilizer

Often found growing in rock gardens and used in xeriscaping, Moonlight cactus adds plenty of interest and texture to the area. It is a slow-growing plant, and this affects its care. Moonlight cactus does not require a lot of nutrients to thrive. Knowing when and how to feed your specimen will help ensure you get years of enjoyment from your plant. Fertilizing Moonlight cactus adds nutrients to the growing medium. Even though it does store water and nutrients, applying plant food during the growing season helps support healthy growth. Fertilizing can also encourage mature specimens to produce blooms in the growing season.
While all plants benefit from additional nutrients, Moonlight cactus only needs a light dose of fertilizer during the growing season. The frequency of fertilization should be 1-2 times a year. It is suggested to fertilize your Moonlight cactus in the spring and autumn, but not in winter&summer when it is dormant. Be careful with repotted plants, you will want to reduce the amount of fertilizer. It’s also a good idea to wait a couple of months after repotting before you start applying fertilizer. It’s best to use a liquid plant food formulated for succulents and cacti when you are fertilizing Moonlight cactus. Dilute the fertilizer with water to half-strength. You do not want the fertilizer building up in the soil. Apply the fertilizer to the base of the plant and water thoroughly, ensuring any excess moisture drains from the container or seeps into the ground.
It is easier to use liquid plant food when you are fertilizing Moonlight cactus, but granules are another option. Follow the directions on the packaging, making sure you dilute liquid fertilizers to half-strength. Whether you are using granules are liquid plant food, always apply it to the soil. Cover the granules with a thin layer of soil and water regardless of the type of plant food you are using.
Over-fertilizing Moonlight cactus is a common problem with new and experienced gardeners. The plant has low nutritional needs and it’s easy to apply a little too much fertilizer. Over-fertilizing Moonlight cactus can burn the plant’s sensitive roots resulting in its slow decay. Without its root system, the plant cannot absorb nutrients and moisture.
Like most plants, Moonlight cactus has a dormancy period and it is when you want to stop the applications of fertilizer. In the summer and winter, the plant ceases growing, and it is when you want to stop applying fertilizer. It’s also a good idea to cease fertilizing for the first couple of months after repotting in the spring.
Continue reading in our app - it's better
A database of 400,000+ plants and unlimited guides at your fingertips...
qrcode
Scan the QR code with your phone camera to download the app
close
Cultivation:FertilizerDetail
Why do I need to fertilize my Moonlight cactus?
Fertilizing Moonlight cactus adds nutrients to the growing medium. Even though it does store water and nutrients, applying plant food during the growing season helps support healthy growth. Fertilizing can also encourage mature specimens to produce blooms in the growing season.
Read More more
Free
When is the best time to fertilize my Moonlight cactus?
While all plants benefit from additional nutrients, Moonlight cactus only needs a light dose of fertilizer during the growing season. The frequency of fertilization should be 1-2 times a year. It is suggested to fertilize your Moonlight cactus in the spring and autumn, but not in winter&summer when it is dormant. Be careful with repotted plants, you will want to reduce the amount of fertilizer. It’s also a good idea to wait a couple of months after repotting before you start applying fertilizer.
Read More more
lock
When should I avoid fertilizing my Moonlight cactus?
Like most plants, Moonlight cactus has a dormancy period and it is when you want to stop the applications of fertilizer. In the summer and winter, the plant ceases growing, and it is when you want to stop applying fertilizer. It’s also a good idea to cease fertilizing for the first couple of months after repotting in the spring.
Read More more
lock
What type of fertilizer does my Moonlight cactus need?
It’s best to use a liquid plant food formulated for succulents and cacti when you are fertilizing Moonlight cactus. Dilute the fertilizer with water to half-strength. You do not want the fertilizer building up in the soil. Apply the fertilizer to the base of the plant and water thoroughly, ensuring any excess moisture drains from the container or seeps into the ground.
Read More more
lock
How do I fertilize my Moonlight cactus?
It is easier to use liquid plant food when you are fertilizing Moonlight cactus, but granules are another option. Follow the directions on the packaging, making sure you dilute liquid fertilizers to half-strength. Whether you are using granules are liquid plant food, always apply it to the soil. Cover the granules with a thin layer of soil and water regardless of the type of plant food you are using.
Read More more
lock
What happens if I fertilize my Moonlight cactus too much?
Over-fertilizing Moonlight cactus is a common problem with new and experienced gardeners. The plant has low nutritional needs and it’s easy to apply a little too much fertilizer. Over-fertilizing Moonlight cactus can burn the plant’s sensitive roots resulting in its slow decay. Without its root system, the plant cannot absorb nutrients and moisture.
Read More more
lock
left right
Cultivation:SunlightDetail

Sunlight

Moonlight cactus is a heliophilic plant and needs sufficient sunlight for its growth and blooming. It can be placed on the outdoor balcony or in the garden without shade. However, long-time exposure to blazing sunlight should be avoided in hot summer, when it needs to be shaded or cooled a little to prevent high temperatures from damaging it.
Cultivation:SunlightDetail
lightmeter

Know the light your plants really get.

Find the best spots for them to optimize their health, simply using your phone.
How much sunlight does Moonlight cactus need to grow?
Moonlight cactus should get at least 6 hours of sun per day, and preferably more. An actual minimum number of hours can vary depending on the intensity of sunlight and other environmental factors, but it is unlikely that the Moonlight cactus will get too much sunlight. They do fine with up to 14 hours of sun per day.
Read More more
Free
What type of sunlight does Moonlight cactus need?
Moonlight cactus needs a lot of bright sunlight. As full-sun plants, they can thrive when given direct light or bright indirect sun. Some types may be able to survive with partial sun, but more sunlight is generally better.
Read More more
lock
Should I protect Moonlight cactus from sun exposure?
Moonlight cactus usually grows in some of the hottest, sunniest places in the world and is well adapted to that kind of environment, so it does not need to be protected from the sun. However, you should be careful about making a sudden move into a very sunny location if your Moonlight cactus is not used to it. Plants need time to adapt to different conditions, so start by moving this plant into the sun for a couple of hours at a time each day, then gradually lengthen the amount of sun exposure. Once adapted, most types of Moonlight cactus will be fine in full sun and don't need protection.
Read More more
lock
What will happen if Moonlight cactus doesn't get enough sunlight?
Without enough sunlight, Moonlight cactus will fail to thrive and grow. Common symptoms of inadequate sunlight include pale coloring, wilting leaves, and leaf drop. Moonlight cactus may also exhibit etiolation (also called legginess). This condition occurs as the plant attempts to stretch toward the light source, leading to a sparse appearance and weak stems.
Read More more
lock
What will happen if Moonlight cactus gets too much sunlight?
Moonlight cactus may develop shades of red, pink, or orange as a means of protection from excess sunlight, so many people like to cause mild sun stress to these plants during the summer. This is not harmful, and they will revert to their normal coloring when light levels decrease from autumn to spring.
If moved too quickly into direct sun, Moonlight cactus can suffer from sunburn. This looks like white or brown spots on the uppermost leaves that have been exposed to the most sun. A sunburned plant should be moved to a shadier location and watered if needed. Sun-damaged leaves can be removed, and should be replaced by new growth over time.
Read More more
lock
Does Moonlight cactus need special care about sunlight during its different growth stages?
As with most plants, younger Moonlight cactus will be more sensitive to strong sunlight and heat than a mature specimen. They should also be protected from direct sun immediately after being transplanted, either by a shade or by keeping the container in a shadier location until the plant is established and putting out new growth.
Read More more
lock
Are there any cautions or tips for sunlight and Moonlight cactus?
It is best to water Moonlight cactus in the morning, particularly during the summer months. If water sits on the leaves or in the crown of the plant, it can burn the plant when the water heats up. It’s also best not to water in the evening, since cooler overnight temperatures slow evaporation and fungi or bacteria can develop in the moist conditions.
Moonlight cactus grown in pots should be rotated occasionally to keep them growing symmetrically. Plants will normally grow toward the light source, so they can develop much more quickly on one side than the other if they are not rotated.
If Moonlight cactus is allowed to get dusty, it will not be able to access sunlight to create energy. The dust acts as a barrier, so the plant may show signs of inadequate light even if it’s in a sunny location. Keep the leaves and stems clean by wiping them periodically with a damp cloth to avoid this issue.
Read More more
lock
left right
Cultivation:PruningDetail

Pruning

Moonlight cactus does not require much pruning. Remove withered flowers and branches so the plant uses nutrients on healthy growth.
Cultivation:PruningDetail
care_advanced_guide

Advanced Care Guide

Cultivation:WaterAndHardinessDetail

Temperature

Moonlight cactus is distributed throughout tropical, subtropical, and semi-desert regions with scarce rainfall, intense sunlight, and hot temperatures. The optimum temperature for growth is 20 to 35 ℃. Lower than 10 ℃ or higher than 35 ℃, growth slows and dormancy begins. The air humidity should not be too high and the environment should be well-ventilated. Avoid high humidity and accumulated water.
Cultivation:WaterAndHardinessDetail
What's the ideal temperature for your Moonlight cactus?
It is more suitable to keep the Moonlight cactus in a particular range of conditions. Temperatures the same as 75-90℉ (25-32℃) are ideal for it. During the early winter season, the temperature shouldn't go below 75℉(25℃) for Moonlight cactus. You can even move it indoors as it will have better protection from the extremes.
Despite that, the Moonlight cactus can survive in some extreme temperatures. Sometimes can survive in low temperatures like 50℉ (15℃), but it is not ideal. You should bring it inside if winter conditions are expected outside.
Read More more
Free
How should I adjust the temperature for my Moonlight cactus during different growing phases?
Moonlight cactus has different growing phases. In the first stage, the dormant seed grows and transforms into a seedling. The dormant seeds need the appropriate conditions in their surroundings to grow as their seeds need a temperature of 75-90℉ (25-32℃) to germinate. The ideal time to make it grow vigorously is during the summer, as the most suitable temperature is around 85℉(30℃). You can adjust the placement of your Moonlight cactus from indoors to sunlight during the hot summer months to receive enough sunlight.
Read More more
lock
How can I keep my Moonlight cactus warm in cold seasons?
It's advisable to bring your Moonlight cactus indoors to avoid the harsh winter conditions. People opt to buy different types of grow light to provide enough sunlight for the plant. However, if your home is not extremely dark, it is not essential to buy these lights. Keep your plants where they will get the most sunlight possible. There should be sufficient light to keep the Moonlight cactus thriving in winter. If you have several Moonlight cactus, then keep them rotating so that they all receive enough sunlight.
Avoid placing your Moonlight cactus too close to the window if you live in northern areas with frigid weather. The cold may be extreme to them, due to which they might get damaged.
Read More more
lock
What happens to my Moonlight cactus when the temperature is too high or too low?
Your Moonlight cactus can grow better in summers and do better in warm temperatures 90℉(32℃) but you should protect it from temperature extremes during hot climates.
However, during winter, it is better to keep your plant dry. Moonlight cactus do well in temperate climates having temperatures between 75-90℉ (25-32℃). However, some gardeners can expose their Moonlight cactus to extreme temperatures causing stress in their plants. While high temperatures ranging between 90℉ and 95℉(32-35℃) can help maintain the deep colors for Moonlight cactus, you must be careful when trying out such experiment. During the hot summer season extremely high temperatures can burn your Moonlight cactus damaging their stem and root system. During the hottest time of the day (when the temperature is extremely high), consider relocating your plant to a shaded place or protect them with a shade cloth.
Read More more
lock
How should I adjust the temperature for my Moonlight cactus in different seasons?
In summers, high temperatures make the growth of Moonlight cactus slowed down to survive in too hot a temperature.
As the cooler periods and rainfall begins, the Moonlight cactus starts growing. If the place you live in has hot summers and warm winters with more rainfalls, you aren't required to change anything.
However, if you live in a place with cold winters, you should let your Moonlight cactus grow more in summer and rest in winter. It is because there is not enough sunlight for Moonlight cactus to grow in winter.
You can help your Moonlight cactus enter dormancy if you live in a place with cold temperatures by decreasing the temperature to 50℉ to 75℉ (15℃ to 25℃).
Read More more
lock
How can I keep my Moonlight cactus warm without a heating pad?
To withstand freezing temperatures outside, as a solution, you can insulate your Moonlight cactus with frost cloths, row covers, tents etc. You can also mulch your Moonlight cactus with small rocks. Mulching the Moonlight cactus soil will provide warmth to your plants and will not let you over-water the plant.
Read More more
lock
How can I protect my Moonlight cactus from temperature damage?
Moonlight cactus is adapted to sunlight and requires sufficient sunlight for healthy growth. You can place it in an outdoor environment without any shade. However, Moonlight cactus shouldn't be kept for a long time in the blazing sunlight in the hot summer when it requires to be put under shade so that extreme temperature doesn't damage them. If the winter is extreme in our area, you must keep your Moonlight cactus indoors to keep them away from frost.
Read More more
lock
What are the tips and precautions for keeping my Moonlight cactus at the right temperature?
Increase water and fertilizer during the growth of plants in spring and summer. Prevent your plant from receiving too much sunlight. To cool plants, spray water around them when the temperature is exceptionally high but don't put water on their stem.
Read More more
lock
left right
Cultivation:SoilDetail

Soil

Moonlight cactus grows best in fertile, gravel-rich, water-permeable soil with a pH value of 6-7. The culture soil formula often used is 60% vermiculite + 20% coco coir or peat moss + 20% sandy soil. A small amount of organic potting soil can also be added. Lightweight culture media such as vermiculite can be added to improve the air permeability of the soil. Eggshell powder or vermicompost can also be added to increase the soil fertility.
Roots of moonlight cactus are very sensitive to oxygen deficiency. If the soil is poorly permeable to air and water, root rot can set in. It's easy to judge permeability: when watering, water should pass through the medium quickly, rather than stop at the soil surface and slowly seep down. Repot and loosen the soil every year to ensure the air permeability of the soil.
Cultivation:SoilDetail
Cultivation:PropagationDetail

Propagation

Cultivation:PlantingDetail

Planting

Cultivation:HarvestDetail

Harvest

In addition to the seeding mentioned above, main propagation methods include division and grafting. To divide, cut off the tip or lateral branches of the stem with a knife and plant it in soil. After a period of time, many small shoots will grow up near the cut. When a shoot grows to proper size, it can be cut off and transplanted to form a new plant.
To graft, select a suitable rootstock. Cut the tip of the rootstock, such as the stem of pitahaya (Hylocereus undatus), and then put moonlight cactus, with its roots removed, in the center of the rootstock and fix it with a rope. After 1-2 weeks, the two parts grow together and the rope can be removed.

Propagation

If you want to get more plants, you can propagate them as follows.
The active growing season during the spring and summer is the best time to propagate Moonlight cactus. During this period, the plants are generating a lot of energy for new growth and should have plenty of stems that can be used for propagation. They can also recover from having cuttings taken during this season than during the slower autumn and winter seasons.
The following are what you need to prepare before propagation can take place.
  1. Sharp scissors or knife
  2. Diluted bleach solution or isopropyl alcohol to clean tools
  3. Pot(s) or nursery tray with drainage holes
  4. Special soil for succulents
  5. Clear plastic bag or a humidity dome for covering cuttings
  6. Rooting hormone (optional but recommended)
  7. Gardening gloves
Steps:
Step 1: Prepare containers by filling them with moistened planting material leaving about half an inch of space from the top of the container.
Step 2: Choose healthy parts for propagation. Cut off healthy stem nodes; the nodes should not be new growth, as this is not easy to succeed. You need to use a clean knife to break or cut off the stem intact at the node location.
Step 3: Leave them for 1-2 weeks, as you need to wait for the cut wounds to dry before taking cuttings. Dip the bottom end of the cutting into rooting powder (if using) according to the directions.
Step 4: Insert the stems into a loose, airy substrate, keeping them tilted, each about one-third of the way into the substrate. Water thoroughly once after planting, after which you need to wait until the soil is dry 2 inches under the surface before watering again.
Step 5: Place it in a location where the cuttings can get light but no direct sunlight, as this can be too intense for cuttings. Water occasionally and do not let the Moonlight cactus dry out.
Most species will begin to produce roots in about 3 weeks, After rooting, the plant will gradually grow new leaves, at which time you can start to harden off the Moonlight cactus. Hardening off involves gradually exposing the Moonlight cactus to more sunlight so that they have time to adjust before being moved permanently outside. Hardening off should usually take about 1 to 2 weeks depending on the outdoor conditions and the type of Moonlight cactus. After this period, Moonlight cactus can be planted in containers or directly in the ground.
Continue reading in our app - it's better
A database of 400,000+ plants and unlimited guides at your fingertips...
qrcode
Scan the QR code with your phone camera to download the app
close
Cultivation:PropagationDetail
Sow, plant, or repot in spring or fall when the temperature is 15 to 20 ℃ . Keep air humidity high when seeding. Use plastic film to cover the soil and remove it after the seeds germinate.
Use permeable clay flowerpots for potted plants. Too large a flowerpot accumulates water easily, while too small a flowerpot limits the development of roots. Before planting, expose soil to blazing sunlight and disinfect to kill pathogens.
If planted in the garden, moonlight cactus prefers an area with full sun and loose soil. Remove all weeds and replace the soil if needed to ensure good water permeability and avoid root rot. Wear gloves or use tongs when planting to prevent your fingers from getting pricked. You can also wrap the plant in a towel to help you move it.
Cultivation:PlantingDetail
Most fruits of moonlight cactus are edible. Pick the fruit when they turn red. Avoid food safety issues by confirming the species with experts. Wear gloves or use scissors and other tools to harvest.
Cultivation:HarvestDetail
care_seasonal_tips

Seasonal Care Tips

seasonal-tip

Seasonal Precautions

During peak growth in spring, summer, and fall, increase water and fertilizer. Avoid sunlight exposure in the heat of the summer. Spray water around the plant to cool it down when the temperature is too high, but avoid leaving water on the stem. Avoid water accumulation in the soil. In winter, water it as little as possible or not at all, and stop fertilizer.
seasonal-tip
more

Summer

more

Fall

more

Winter

Succulents like this plant are actively growing in the summer.

more
1
Keep an eye on soil moisture levels. Do not allow the soil to completely dry out.
more
2
Continue fertilizing every couple of weeks with all-purpose plant food.
more
3
The plant also requires plenty of sunlight during the day to encourage blooming.
more
4
Prune back the old flowers after blooming at the end of the summer.
more
5
While your plant is actively growing, you can also remove stems for propagation. Place the stem in fresh soil and lightly water it.

While your plant is starting to enter dormancy towards the end of fall, it's still growing for much of the season.

more
1
Continue watering and fertilizing on a regular schedule, but reduce both of these routines as the season winds down and begins reaching dormancy.
more
2
Use an all-purpose fertilizer and water the plant when the soil is dry; make sure to err on the side of dry soil rather than soggy soil.
more
3
Keep making sure your plant receives enough light during this time, particularly during the morning or evening hours, which will help the plant grow well.

During the cold winter months, the plant usually goes into a dormant state.

more
1
Reduce watering your plant in the winter to give it a rest and let it lie dormant. It’s best to keep the plant dry during this season, rather than risk it being soggy.
more
2
Make sure it receives an adequate amount of sunlight, typically in the morning or evening, although it’s not as urgent during dormancy.
more
3
Since these plants don't survive in freezing outdoor temperatures, keep them in sufficiently warm rooms indoors, away from drafts or cold windows.
more
4
For the most part, you can leave these hardy plants to themselves during these colder months.
care_pet_and_diseases

Common Pests & Diseases

Common issues for Moonlight cactus based on 10 million real cases
Scars
Scars Scars
Scars
Any light-colored markings that appear on stems but which do not enlarge or multiply are simply scars that have healed.
Solutions: Each source of scarring requires a different approach to help your plant recover. Protect the trunk and leaves from physical damage like scrapes. If pests or disease are the cause of scarring, isolate the plant from others to avoid further spread. Some pests can be removed with organic remedies such as a soft cloth and soapy water solution or diluted isopropyl alcohol spray. Stop sunburn by moving your plant away from direct sunlight and making sure it has the water it needs. Frequent leaf or bud loss may be due to insufficient light or nutrients.
Fruit withering
Fruit withering Fruit withering
Fruit withering
Fungal infection or normal ripening can cause the fruit to dry out.
Solutions: There are a number of appropriate solutions to control fruit withering: Remove any fruit as soon as it shows any signs of infection. Do not compost. Use a fungicide prior to leaf bud and then as per manufacturers instructions throughout the season.
Brown spot
Brown spot Brown spot
Brown spot
This infection can cause brown spots or patches to appear on the plant.
Solutions: In minor cases of brown spot, there isn’t any need to treat the disease. However, if much of the foliage is affected and defoliation occurs, the plant will benefit from getting rid of the infection. It is recommended to start by applying organic treatment options, working up to the more potent synthetic, chemical fungicides if necessary. Organic options won’t kill the fungus, but will prevent it from spreading. Dissolve ½ teaspoon of baking soda and one teaspoon of liquid soap in a gallon of water. Using a spray bottle, spray on tops and bottoms of leaves until the mixture drips off. Repeat every two weeks until existing spots stop enlarging and new spots no longer appear. Spray a copper-based fungicidal soap on the leaves, coating the top and bottom leaf surfaces. Reapply as directed on the product label. Copper penetrates the leaf surface and prevents germination of spores so the fungus cannot spread. Apply an all-purpose fungicide to the entire plant, following the label instructions carefully.
Stem rot
Stem rot Stem rot
Stem rot
Bacterial infection can cause the stems to become soft and rotten.
Solutions: If the plant is only infected a little, it can sometimes be saved. This mainly applies to houseplants that are grown in pots. Here's what to do. Remove the plant from the pot and gently shake off as much soil as possible. Using pruning tools that have been disinfected, remove any diseased foliage and roots. Be sure the new pot has good drainage holes and wash it with one part bleach and nine parts water to ensure that it is completely clean and sanitized. Dip the plant's roots in fungicide to kill off any remaining fungal spores before potting into the clean growing medium. Only water the plant when the top inch of the soil is dry and never let the plant sit in water. For plants that are grown in the ground, it's best just to remove the infected plants and destroy them. Do not plant in the same spot until the soil has been allowed to dry out and has been treated with a fungicide.
autodiagnose

Treat and prevent plant diseases.

AI-powered plant doctor helps you diagnose plant problems in seconds.
close
Scars
plant poor
Scars
Any light-colored markings that appear on stems but which do not enlarge or multiply are simply scars that have healed.
Symptom Analysis
Symptom Analysis
Scars form when the plant repairs wounds. They can be the result of people or pets passing by and scraping the plant. Once the underlying issue is resolved, the plant will heal but a scar may remain.
Pests and pathogens can also cause scarring. Insects may attack the plant for a meal, resulting in extensive scarring when a few invaders turn into an infestation. Diseases such as fungus and bacteria can weaken the plant, causing brown spots, mushy areas, or blisters that lead to scars.
Scars occur on stems when a leaf or bud has been lost and the plant has healed. The harder tissue is like a scab that protects a wound.
On other occasions, scars can signal problems from environmental conditions, such as overexposure to sunlight or heat. It might surprise you to know that plants can suffer from sunburn, even desert dwellers like cactus!
Solutions
Solutions
Each source of scarring requires a different approach to help your plant recover.
  1. Protect the trunk and leaves from physical damage like scrapes.
  2. If pests or disease are the cause of scarring, isolate the plant from others to avoid further spread. Some pests can be removed with organic remedies such as a soft cloth and soapy water solution or diluted isopropyl alcohol spray.
  3. Stop sunburn by moving your plant away from direct sunlight and making sure it has the water it needs.
  4. Frequent leaf or bud loss may be due to insufficient light or nutrients.
Prevention
Prevention
Preventing some sources of scarring is easier than others, but all start with careful attention to your plants once you decide to bring them home.
  1. Review specific guidelines for your plant, including soil drainage, watering, and fertilizer requirements.
  2. Inspect plants before planting and use sterile pots and fresh potting soil or media to limit transfer of fungi or bacteria.
  3. Once established, check your plants regularly for signs of scarring or the presence of pests, as it is better to catch problems as early as possible.
Continue reading in our app - it's better
A database of 400,000+ plants and unlimited guides at your fingertips...
qrcode
Scan the QR code with your phone camera to download the app
Fruit withering
plant poor
Fruit withering
Fungal infection or normal ripening can cause the fruit to dry out.
Overview
Overview
Fruit withering is common on many tree fruits, including apples, pears, peaches, cherries, and plums, as well as fruiting shrubs. It is caused by a fungal pathogen and will result in wrinkled and desiccated fruit.
Symptom Analysis
Symptom Analysis
Here are the most common symptoms in the order that they are likely to occur.
  1. Both leaves and blossom on the tips of branches will go brown and wither.
  2. Gray powdery patches will appear on infected leaves and flowers, and this will be most apparent after rain.
  3. Any fruit that does appear will turn wrinkled and fail to develop.
  4. Branch tips begin to die, progressing back to larger branches, causing general deterioration of the tree or plant.
Disease Cause
Disease Cause
The withering is caused by one of two fungal pathogens, one called Monilina laxa and the other called M. fructigen. The spores overwinter on infected plant material and are then spread the following spring by wind, rain, or animal vectors. The problem will start to become noticeable in mid-spring, but will increase in severity as summer progresses and the fungus grows. If not addressed, the disease will intensify and spread to other plants in the vicinity.
Solutions
Solutions
There are a number of appropriate solutions to control fruit withering:
  1. Remove any fruit as soon as it shows any signs of infection. Do not compost.
  2. Use a fungicide prior to leaf bud and then as per manufacturers instructions throughout the season.
Prevention
Prevention
Preventative measures include:
  1. Ensuring adequate spacing between plants or trees.
  2. Staking plants that are prone to tumbling to prevent moisture or humidity build up.
  3. Prune correctly so that there is adequate air movement and remove any dead or diseased branches that may carry spores.
  4. Practice good plant hygiene by removing fallen material and destroying it as soon as possible.
Continue reading in our app - it's better
A database of 400,000+ plants and unlimited guides at your fingertips...
qrcode
Scan the QR code with your phone camera to download the app
Brown spot
plant poor
Brown spot
This infection can cause brown spots or patches to appear on the plant.
Overview
Overview
Discolored spots on the foliage of plants are one of the most common disease problems people observe. These spots are caused by fungal and bacterial diseases, with most infections related to a fungal pathogen.
Brown spot can occurs on all houseplants, flowering ornamentals, vegetable plants, and leaves of trees, bushes, and shrubs. No plants are resistant to it, and the problem is worse in warm, wet environments. It can occur at any point in the life stage as long as leaves are present.
Small brownish spots appear on the foliage and enlarge as the disease progresses. In severe cases, the plant or tree is weakened when the lesions interrupt photosynthesis or cause defoliation.
Symptom Analysis
Symptom Analysis
In most cases, brown spot only affects a small percentage of the whole plant, appearing on a small amount of the leaves. A small infection only puts minor stress on the plant. However, if left untreated and the disease progresses over numerous seasons, it will severely impact the health and productivity of the infected specimen.
  • Sporulation begins (reproduction of the fungal spores), and tiny spots appear on leaves.
  • Placement is often random and scattered as diseases are spread through raindrops.
  • May appear on lower leaves and the interior of the plant where humidity is higher.
  • Brown spots enlarge and grow large enough to touch neighboring spots to form a more prominent blotch.
  • Leaf margins may turn yellow.
  • Tiny black dots (fruiting bodies of the fungi) appear in the dead spots.
  • Blotches grow in size until the entire leaf is brown.
  • The leaf falls off the plant.
Severe Symptoms
  • Partial or complete premature defoliation
  • Reduced growth
  • Increased susceptibility to pests and other diseases
Disease Cause
Disease Cause
Brown spot, or leaf spot, is a common descriptive term given to several diseases affecting the leaves of plants and trees. Around 85% of diseases exhibiting leaf spots are due to fungus or fungus-like organisms. Sometimes brown spot is caused by a bacterial infection, or insect activity with similar symptoms.
When conditions are warm and the leaf surfaces are wet, fungal spores being transported by wind or rain land on the surface and cling to it. They do not rupture the cell walls but grow in the space between the plant plasma membrane and the plant cell wall. As the spores reproduce, they release toxins and enzymes that cause necrotic spots (i.e., dead tissue) on the leaves, allowing the fungi to consume the products released when the cells degrade.
Solutions
Solutions
In minor cases of brown spot, there isn’t any need to treat the disease. However, if much of the foliage is affected and defoliation occurs, the plant will benefit from getting rid of the infection. It is recommended to start by applying organic treatment options, working up to the more potent synthetic, chemical fungicides if necessary.
Organic options won’t kill the fungus, but will prevent it from spreading.
  1. Dissolve ½ teaspoon of baking soda and one teaspoon of liquid soap in a gallon of water. Using a spray bottle, spray on tops and bottoms of leaves until the mixture drips off. Repeat every two weeks until existing spots stop enlarging and new spots no longer appear.
  2. Spray a copper-based fungicidal soap on the leaves, coating the top and bottom leaf surfaces. Reapply as directed on the product label. Copper penetrates the leaf surface and prevents germination of spores so the fungus cannot spread.
  3. Apply an all-purpose fungicide to the entire plant, following the label instructions carefully.
Prevention
Prevention
Like many other diseases, it is easier to prevent brown spot than cure it, and this is done through cultural practices.
  • Clear fall leaves from the ground before winter to minimize places where fungi and bacteria can overwinter.
  • Maintain good air movement between plants through proper plant spacing.
  • Increase air circulation through the center of plants through pruning.
  • Thoroughly clean all pruning tools after working with diseased plants.
  • Never dispose of disease plant material in a compost pile.
  • Avoid overhead watering to keep moisture off of the foliage.
  • Keep plants healthy by providing adequate sunlight, water, and fertilizer.
Continue reading in our app - it's better
A database of 400,000+ plants and unlimited guides at your fingertips...
qrcode
Scan the QR code with your phone camera to download the app
Stem rot
plant poor
Stem rot
Bacterial infection can cause the stems to become soft and rotten.
Overview
Overview
Stem rot is a serious disease and can affect many different types of plants. it can be particularly prevalent when the temperature of the soil is over 16 ℃ and there's a lot of moisture in the soil. This could be from unusually heavy rainfalls or too much irrigation. Once stem rot sets in, it's very difficult to get rid of the disease and most affected plants will have to be discarded. This is especially the case for vegetables, herbs, and other herbaceous plants that have soft stems. This is why it's important to ensure that the soil used for growing these plants is well-drained and that overwatering is avoided. Using good cultural practices also help in curbing these types of fungal diseases.
Symptom Analysis
Symptom Analysis
Plants that have been affected by stem rot will first display a yellowing of the lower leaves. This is followed by obvious wilting and stunted growth.
If the stem of the affected plant is examined closely, there will be some dark discolorations starting near the base and moving upward. If the roots of affected plants are examined, they will appear dark and mushy instead of white and healthy-looking. Eventually, the entire plant will wilt and die.
Disease Cause
Disease Cause
Stem rot is caused by a variety of soil-borne fungus pathogens. The type of fungus depends on the species of plant that is affected. Two fungi responsible for stem rot are Rhizoctonia and Fusarium. These fungal pathogens live in soil and migrate to the plant when conditions are optimum. This includes warm, humid weather and excessive soil moisture. Commonly, vegetable seedlings are affected by these fungi.
Sclerotinia sclerotiorum is another fungus that causes stem rot in plants. This fungus has a host range of over 350 different species of plants. Plants most susceptible to this fungus include many vegetable varieties such as cucumbers, beans, cilantro, carrots, cabbage, melons, lettuce, peas, onions, tomatoes, pumpkins, and squash. This fungus can produce different symptoms in different species. In some cases, the fungus causes irregular spots on stems and other plant material that appear water-soaked. On other plant species, the fungus appears as dry lesions that grow and girdle the stem of the plant.
The third type of fungus that causes stem rot is Phytophthora capsici. Plants that belong to the cucumber family are most susceptible to this fungal infection. This fungus manifests as water-soaked lesions on the stems that then turn brown and girdle the stem.
All of these fungal pathogens are transmitted to the plant by water splashing from the soil up onto the plant. That's because the fungal spores live in the soil where they wait for the right conditions to infect the plants.
Solutions
Solutions
If the plant is only infected a little, it can sometimes be saved. This mainly applies to houseplants that are grown in pots. Here's what to do.
  1. Remove the plant from the pot and gently shake off as much soil as possible.
  2. Using pruning tools that have been disinfected, remove any diseased foliage and roots.
  3. Be sure the new pot has good drainage holes and wash it with one part bleach and nine parts water to ensure that it is completely clean and sanitized.
  4. Dip the plant's roots in fungicide to kill off any remaining fungal spores before potting into the clean growing medium.
  5. Only water the plant when the top inch of the soil is dry and never let the plant sit in water.
For plants that are grown in the ground, it's best just to remove the infected plants and destroy them. Do not plant in the same spot until the soil has been allowed to dry out and has been treated with a fungicide.
Prevention
Prevention
For outdoor gardens:
  1. Raking the garden thoroughly in the springtime will help to cut down on pathogens that may be living in the soil.
  2. Using a copper fungicide on plants in the springtime will cut down on fungal growth and prevent the spread of infection.
  3. Placing a heavy layer of mulch on top of the soil will also prevent pathogens from splashing up onto the stems of plants.
  4. Place plants at the recommended spacing to encourage better air flow between them.
  5. Water plants at the base instead of overhead to prevent excessive moisture on foliage.
For indoor plants:
  1. Avoid overwatering houseplants and ensure the roots do not sit in water.
  2. Make sure that indoor plants receive adequate air circulation and light.
Continue reading in our app - it's better
A database of 400,000+ plants and unlimited guides at your fingertips...
qrcode
Scan the QR code with your phone camera to download the app
care_more_info

More About Moonlight Cactus

Plant Type
Plant Type
Succulent, Shrub
Lifespan
Lifespan
Perennial
Flower Color
Flower Color
White
Yellow
Pink
Flower Size
Flower Size
7 to 9 cm
Plant Height
Plant Height
2 m
View More Info
plantfinder

Find your perfect green friends.

Plan your green oasis based on your criteria: plant type, pet safety, skill level, sites, and more.
care_faq

Common Problems

Why is its fleshy stem thinner and thinner as it grows?

more more
Thin stems may be caused by insufficient sunlight, insufficient water, or fertilizer deficiency. Move the pot to a brighter place, but avoid sunburn. Increase water and fertilizer.

How do I deal with root or stem rot?

more more
Excess water often leads to root and stem rot. Avoid accumulated water in soil. Prune rotten roots and stems and transplant to a new flowerpot in a well-ventilated place. The soil should be loose and air-permeable as far as possible.

Why doesn't my moonlight cactus ever bloom?

more more
Firstly, it may not be time for the plant to bloom. Time from seedling to blooming can range between 2-20 years or longer. Secondly, the plant may need more sunlight, temperature or fertilizer. Increase the exposure to sunlight and fertilizer appropriately, supplement the fertilizer with phosphorus and potassium, or purchase special fertilizer for promoting blooming of moonlight cactus.

Why does moonlight cactus turn yellow?

more more
Moonlight cactus turns yellow due to overwatering, insufficient sunlight, or pests. Moonlight cactus does not require much water, and excess water leads to root anoxia and root rot. Generally, it does not need to be watered often. Water it only when the soil is completely dry. Remember to drain the water in the flowerpot tray. Sunlight can be increased, but avoid direct exposure to blazing sunlight to prevent sunburn. Remove a small amount of pests with alcohol. For large infestations, spray pesticide.
plant

Botanist in your pocket

plant
plant plant
plant
plant

App

plant
close
product icon
Continue reading in our app - it's better
A database of 400,000+ plants and unlimited guides at your fingertips...
Your Ultimate Guide to Plants
Identify, grow, and nurture the better way!
product icon
17,000 local species +400,000 global species studied
product icon
Nearly 5 years of research
product icon
80+ scholars in botany and gardening
ad
ad
Botanist in your pocket
qrcode
PictureThis Ios Download PictureThis Android Download
Scan the QR code with your phone camera to download the app
close
title
Botanist in your pocket
qrcode
Scan QR code to download
app-store google-store
About
Basic Care
Advanced Care
Seasonal Tips
Pests & Diseases
More Info
FAQ
Moonlight cactus
Moonlight cactus

How to care Moonlight Cactus

Moonlight cactus (Cereus spegazzinii) is a plant species native to Brazil, Argentina, and Bolivia. The moonlight cactus is widely distributed in the wild where it grows at the edges of forests and is not considered endangered. This species is often grown in pots and rocky gardens.
symbolism

Symbolism

Maternal love or warmth
Water
Water
Every 3 weeks
Sunlight
Sunlight
Full sun
care_basic_guide

Basic Care Guide

Cultivation:WaterDetail

Water

Cultivation:WaterDetail
Moonlight cactus is a drought-tolerant plant that does not require frequent watering. Water thoroughly when the soil is completely dry. When potted, water slowly, wait for water to flow out the bottom, and then pour the excess water from the tray to avoid water accumulation.
Spring, summer, and fall are its growing seasons. Water once or twice a week to keep the soil slightly wet. In winter, water less; just keep the soil from drying excessively; usually once a week. Besides, water with rainwater or distilled water rather than tap water.
Tap water contains a lot of calcium, magnesium, and other mineral salts. Long-term use tends to cause soil compaction. Avoid splashing water on its stem when watering to prevent rotting.
close

Water

Water when completely dry
Moonlight cactus is adapted to warm, dry conditions with plenty of sunlight. The most important consideration in watering Moonlight cactus is to avoid overwatering. You can let it get quite dry before watering again. It is always better to give this type of plant too little water over too much.The original habitat of Moonlight cactus is relatively dry with little rain, but when it rains, the soil will be thoroughly moistened. So you can mimic this situation by bottom-watering your plant when the soil is totally dry. Deep soil bathing is better than frequent light watering for Moonlight cactus .
There’s not a hard-and-fast rule for how often to water Moonlight cactus . The best way to determine this is to check the soil and only water when it’s bone dry. You can either stick your finger in the pot or use a moisture meter to check the soil below the surface. When you plant it in a deep pot, you can do this with a stick or chopstick. If it feels even a little bit moist, wait a few days and check it again.
Most people will need to water Moonlight cactus about every two weeks in summer and once a month in winter, There are several environmental conditions that will affect how your Moonlight cactus needs to be watered, including the container size, soil type, temperature, and humidity.
First off, the container and soil you use will determine how often to water and how much water to use each time. Be sure you use a container with plenty of drainage holes in the bottom so extra water can escape the pot. A small container has less room for soil, meaning it won’t hold as much moisture, while a larger pot will stay wet longer and need to be watered less often. It’s important not to keep your Moonlight cactus in an oversized pot as this can easily lead to overwatering. When repotting, move to just one size larger than the current container. A shallow container works better than a deep one, since Moonlight cactus s have shallow root systems.
Moonlight cactus will need to be watered less often in winter and more often in the active growing season in spring and autumn. During the winter, growth slows down considerably and the plant isn’t using much energy or water. There is less water lost to evaporation in cooler winter air, meaning that soil stays wet for much longer than it would in the summer.
Avoid overwatering
The symptoms of overwatering are yellow, swollen, and translucent leaves that may even burst open from being over-full with water. If the problem continues without being treated, leaves might turn brown or black, and fall off the plant at the slightest touch. Be sure to check the soil to determine if overwatering is the culprit, as some other issues can cause similar symptoms.
Overwatering is dangerous to Moonlight cactus and can be fatal to your plant if you don’t remedy the situation. Too much moisture over time leads to root rot, which prevents the roots from being able to absorb nutrients and water from the soil. Root rot occurs when wet conditions allow fungi and bacteria to flourish in the soil and feed on roots. When you find that it's overwatered, you'd better change the growing conditions, place it somewhere with more air ventilation and adjust water frequency, for example.
It’s a bit difficult (but not impossible) to save an overwatered plant. The key is catching it early before a lot of damage has occurred. If the roots become rotten, it is likely to kill the entire plant. If you suspect you have overwatered your Moonlight cactus , the first step is to remove it from its pot and check the roots and soil.
After removing the plant from its pot, gently remove wet soil from around the roots and then rinse them clean in room-temperature water. This helps with removing fungus that might be lurking in the soil and allows you to get a better sense of how healthy the roots are. If your plant has already developed root rot, you will see roots that are dark brown or black, soft, mushy, or slimy.
Show More
more
Unlock complete care guides for 10,000+ species
Continue reading in our app - it's better
A database of 400,000+ plants
unlimited guides at your fingertips...
PictureThis Ios Download PictureThis Android Download
waterreminders

Never miss a care task again!

Plant care made easier than ever with our tailor-made smart care reminder.
What should I do if I water my Moonlight cactus too much or too little?
more
Free
How often should I water my Moonlight cactus?
more
lock
What should I consider when watering my Moonlight cactus?
more
lock
How to water Moonlight cactus?
more
lock
Show More more
Cultivation:FertilizerDetail

Fertilizer

Cultivation:FertilizerDetail
In growing seasons (namely spring, summer and fall), fertilize moonlight cactus once a month with liquid fertilizer. No fertilizer is required in winter. A small amount of slow-release fertilizer can be well mixed into the soil when repotting in spring or fall.
Use nitrogen fertilizer during seedling and phosphate-potassium fertilizer before and after blooming. The fertilizer concentration should be as low as possible. It would be better to apply low-concentrate fertilizer several times rather than to use a high concentration. If the base is yellow and grows slowly, the cause may be excessive fertilizer, and fertilization should be immediately stopped.
close

Fertilizer

Often found growing in rock gardens and used in xeriscaping, Moonlight cactus adds plenty of interest and texture to the area. It is a slow-growing plant, and this affects its care. Moonlight cactus does not require a lot of nutrients to thrive. Knowing when and how to feed your specimen will help ensure you get years of enjoyment from your plant. Fertilizing Moonlight cactus adds nutrients to the growing medium. Even though it does store water and nutrients, applying plant food during the growing season helps support healthy growth. Fertilizing can also encourage mature specimens to produce blooms in the growing season.
While all plants benefit from additional nutrients, Moonlight cactus only needs a light dose of fertilizer during the growing season. The frequency of fertilization should be 1-2 times a year. It is suggested to fertilize your Moonlight cactus in the spring and autumn, but not in winter&summer when it is dormant. Be careful with repotted plants, you will want to reduce the amount of fertilizer. It’s also a good idea to wait a couple of months after repotting before you start applying fertilizer. It’s best to use a liquid plant food formulated for succulents and cacti when you are fertilizing Moonlight cactus. Dilute the fertilizer with water to half-strength. You do not want the fertilizer building up in the soil. Apply the fertilizer to the base of the plant and water thoroughly, ensuring any excess moisture drains from the container or seeps into the ground.
It is easier to use liquid plant food when you are fertilizing Moonlight cactus, but granules are another option. Follow the directions on the packaging, making sure you dilute liquid fertilizers to half-strength. Whether you are using granules are liquid plant food, always apply it to the soil. Cover the granules with a thin layer of soil and water regardless of the type of plant food you are using.
Over-fertilizing Moonlight cactus is a common problem with new and experienced gardeners. The plant has low nutritional needs and it’s easy to apply a little too much fertilizer. Over-fertilizing Moonlight cactus can burn the plant’s sensitive roots resulting in its slow decay. Without its root system, the plant cannot absorb nutrients and moisture.
Like most plants, Moonlight cactus has a dormancy period and it is when you want to stop the applications of fertilizer. In the summer and winter, the plant ceases growing, and it is when you want to stop applying fertilizer. It’s also a good idea to cease fertilizing for the first couple of months after repotting in the spring.
Show More
more
Unlock complete care guides for 10,000+ species
Continue reading in our app - it's better
A database of 400,000+ plants
unlimited guides at your fingertips...
PictureThis Ios Download PictureThis Android Download
Why do I need to fertilize my Moonlight cactus?
more
Free
When is the best time to fertilize my Moonlight cactus?
more
lock
When should I avoid fertilizing my Moonlight cactus?
more
lock
What type of fertilizer does my Moonlight cactus need?
more
lock
Show More more
Cultivation:SunlightDetail

Sunlight

Cultivation:SunlightDetail
Moonlight cactus is a heliophilic plant and needs sufficient sunlight for its growth and blooming. It can be placed on the outdoor balcony or in the garden without shade. However, long-time exposure to blazing sunlight should be avoided in hot summer, when it needs to be shaded or cooled a little to prevent high temperatures from damaging it.
lightmeter

Know the light your plants really get.

Find the best spots for them to optimize their health, simply using your phone.
How much sunlight does Moonlight cactus need to grow?
more
Free
What type of sunlight does Moonlight cactus need?
more
lock
Should I protect Moonlight cactus from sun exposure?
more
lock
What will happen if Moonlight cactus doesn't get enough sunlight?
more
lock
Show More more
Cultivation:PruningDetail

Pruning

Cultivation:PruningDetail
Moonlight cactus does not require much pruning. Remove withered flowers and branches so the plant uses nutrients on healthy growth.
care_advanced_guide

Advanced Care Guide

Cultivation:WaterAndHardinessDetail

Temperature

Cultivation:WaterAndHardinessDetail
Moonlight cactus is distributed throughout tropical, subtropical, and semi-desert regions with scarce rainfall, intense sunlight, and hot temperatures. The optimum temperature for growth is 20 to 35 ℃. Lower than 10 ℃ or higher than 35 ℃, growth slows and dormancy begins. The air humidity should not be too high and the environment should be well-ventilated. Avoid high humidity and accumulated water.
What's the ideal temperature for your Moonlight cactus?
more
Free
How should I adjust the temperature for my Moonlight cactus during different growing phases?
more
lock
How can I keep my Moonlight cactus warm in cold seasons?
more
lock
What happens to my Moonlight cactus when the temperature is too high or too low?
more
lock
Show More more
Cultivation:SoilDetail

Soil

Cultivation:SoilDetail
Moonlight cactus grows best in fertile, gravel-rich, water-permeable soil with a pH value of 6-7. The culture soil formula often used is 60% vermiculite + 20% coco coir or peat moss + 20% sandy soil. A small amount of organic potting soil can also be added. Lightweight culture media such as vermiculite can be added to improve the air permeability of the soil. Eggshell powder or vermicompost can also be added to increase the soil fertility.
Roots of moonlight cactus are very sensitive to oxygen deficiency. If the soil is poorly permeable to air and water, root rot can set in. It's easy to judge permeability: when watering, water should pass through the medium quickly, rather than stop at the soil surface and slowly seep down. Repot and loosen the soil every year to ensure the air permeability of the soil.
Cultivation:PropagationDetail

Propagation

Cultivation:PlantingDetail

Planting

Cultivation:HarvestDetail

Harvest

Cultivation:PropagationDetail
In addition to the seeding mentioned above, main propagation methods include division and grafting. To divide, cut off the tip or lateral branches of the stem with a knife and plant it in soil. After a period of time, many small shoots will grow up near the cut. When a shoot grows to proper size, it can be cut off and transplanted to form a new plant.
To graft, select a suitable rootstock. Cut the tip of the rootstock, such as the stem of pitahaya (Hylocereus undatus), and then put moonlight cactus, with its roots removed, in the center of the rootstock and fix it with a rope. After 1-2 weeks, the two parts grow together and the rope can be removed.
close

Propagation

If you want to get more plants, you can propagate them as follows.
The active growing season during the spring and summer is the best time to propagate Moonlight cactus. During this period, the plants are generating a lot of energy for new growth and should have plenty of stems that can be used for propagation. They can also recover from having cuttings taken during this season than during the slower autumn and winter seasons.
The following are what you need to prepare before propagation can take place.
  1. Sharp scissors or knife
  2. Diluted bleach solution or isopropyl alcohol to clean tools
  3. Pot(s) or nursery tray with drainage holes
  4. Special soil for succulents
  5. Clear plastic bag or a humidity dome for covering cuttings
  6. Rooting hormone (optional but recommended)
  7. Gardening gloves
Steps:
Step 1: Prepare containers by filling them with moistened planting material leaving about half an inch of space from the top of the container.
Step 2: Choose healthy parts for propagation. Cut off healthy stem nodes; the nodes should not be new growth, as this is not easy to succeed. You need to use a clean knife to break or cut off the stem intact at the node location.
Step 3: Leave them for 1-2 weeks, as you need to wait for the cut wounds to dry before taking cuttings. Dip the bottom end of the cutting into rooting powder (if using) according to the directions.
Step 4: Insert the stems into a loose, airy substrate, keeping them tilted, each about one-third of the way into the substrate. Water thoroughly once after planting, after which you need to wait until the soil is dry 2 inches under the surface before watering again.
Step 5: Place it in a location where the cuttings can get light but no direct sunlight, as this can be too intense for cuttings. Water occasionally and do not let the Moonlight cactus dry out.
Most species will begin to produce roots in about 3 weeks, After rooting, the plant will gradually grow new leaves, at which time you can start to harden off the Moonlight cactus. Hardening off involves gradually exposing the Moonlight cactus to more sunlight so that they have time to adjust before being moved permanently outside. Hardening off should usually take about 1 to 2 weeks depending on the outdoor conditions and the type of Moonlight cactus. After this period, Moonlight cactus can be planted in containers or directly in the ground.
Show More
more
Unlock complete care guides for 10,000+ species
Continue reading in our app - it's better
A database of 400,000+ plants
unlimited guides at your fingertips...
PictureThis Ios Download PictureThis Android Download
Cultivation:PlantingDetail
Sow, plant, or repot in spring or fall when the temperature is 15 to 20 ℃ . Keep air humidity high when seeding. Use plastic film to cover the soil and remove it after the seeds germinate.
Use permeable clay flowerpots for potted plants. Too large a flowerpot accumulates water easily, while too small a flowerpot limits the development of roots. Before planting, expose soil to blazing sunlight and disinfect to kill pathogens.
If planted in the garden, moonlight cactus prefers an area with full sun and loose soil. Remove all weeds and replace the soil if needed to ensure good water permeability and avoid root rot. Wear gloves or use tongs when planting to prevent your fingers from getting pricked. You can also wrap the plant in a towel to help you move it.
Cultivation:HarvestDetail
Most fruits of moonlight cactus are edible. Pick the fruit when they turn red. Avoid food safety issues by confirming the species with experts. Wear gloves or use scissors and other tools to harvest.
care_seasonal_tips

Seasonal Care Tips

seasonal-tip

Seasonal Precautions

During peak growth in spring, summer, and fall, increase water and fertilizer. Avoid sunlight exposure in the heat of the summer. Spray water around the plant to cool it down when the temperature is too high, but avoid leaving water on the stem. Avoid water accumulation in the soil. In winter, water it as little as possible or not at all, and stop fertilizer.
more

Summer

more

Fall

more

Winter

Succulents like this plant are actively growing in the summer.

more
1
Keep an eye on soil moisture levels. Do not allow the soil to completely dry out.
more
2
Continue fertilizing every couple of weeks with all-purpose plant food.
more
3
The plant also requires plenty of sunlight during the day to encourage blooming.
more
4
Prune back the old flowers after blooming at the end of the summer.
more
5
While your plant is actively growing, you can also remove stems for propagation. Place the stem in fresh soil and lightly water it.

While your plant is starting to enter dormancy towards the end of fall, it's still growing for much of the season.

more
1
Continue watering and fertilizing on a regular schedule, but reduce both of these routines as the season winds down and begins reaching dormancy.
more
2
Use an all-purpose fertilizer and water the plant when the soil is dry; make sure to err on the side of dry soil rather than soggy soil.
more
3
Keep making sure your plant receives enough light during this time, particularly during the morning or evening hours, which will help the plant grow well.

During the cold winter months, the plant usually goes into a dormant state.

more
1
Reduce watering your plant in the winter to give it a rest and let it lie dormant. It’s best to keep the plant dry during this season, rather than risk it being soggy.
more
2
Make sure it receives an adequate amount of sunlight, typically in the morning or evening, although it’s not as urgent during dormancy.
more
3
Since these plants don't survive in freezing outdoor temperatures, keep them in sufficiently warm rooms indoors, away from drafts or cold windows.
more
4
For the most part, you can leave these hardy plants to themselves during these colder months.
care_pet_and_diseases

Common Pests & Diseases

Common issues for Moonlight cactus based on 10 million real cases
Scars
Scars Scars Scars
Any light-colored markings that appear on stems but which do not enlarge or multiply are simply scars that have healed.
Solutions: Each source of scarring requires a different approach to help your plant recover. Protect the trunk and leaves from physical damage like scrapes. If pests or disease are the cause of scarring, isolate the plant from others to avoid further spread. Some pests can be removed with organic remedies such as a soft cloth and soapy water solution or diluted isopropyl alcohol spray. Stop sunburn by moving your plant away from direct sunlight and making sure it has the water it needs. Frequent leaf or bud loss may be due to insufficient light or nutrients.
Learn More more
Fruit withering
Fruit withering Fruit withering Fruit withering
Fungal infection or normal ripening can cause the fruit to dry out.
Solutions: There are a number of appropriate solutions to control fruit withering: Remove any fruit as soon as it shows any signs of infection. Do not compost. Use a fungicide prior to leaf bud and then as per manufacturers instructions throughout the season.
Learn More more
Brown spot
Brown spot Brown spot Brown spot
This infection can cause brown spots or patches to appear on the plant.
Solutions: In minor cases of brown spot, there isn’t any need to treat the disease. However, if much of the foliage is affected and defoliation occurs, the plant will benefit from getting rid of the infection. It is recommended to start by applying organic treatment options, working up to the more potent synthetic, chemical fungicides if necessary. Organic options won’t kill the fungus, but will prevent it from spreading. Dissolve ½ teaspoon of baking soda and one teaspoon of liquid soap in a gallon of water. Using a spray bottle, spray on tops and bottoms of leaves until the mixture drips off. Repeat every two weeks until existing spots stop enlarging and new spots no longer appear. Spray a copper-based fungicidal soap on the leaves, coating the top and bottom leaf surfaces. Reapply as directed on the product label. Copper penetrates the leaf surface and prevents germination of spores so the fungus cannot spread. Apply an all-purpose fungicide to the entire plant, following the label instructions carefully.
Learn More more
Stem rot
Stem rot Stem rot Stem rot
Bacterial infection can cause the stems to become soft and rotten.
Solutions: If the plant is only infected a little, it can sometimes be saved. This mainly applies to houseplants that are grown in pots. Here's what to do. Remove the plant from the pot and gently shake off as much soil as possible. Using pruning tools that have been disinfected, remove any diseased foliage and roots. Be sure the new pot has good drainage holes and wash it with one part bleach and nine parts water to ensure that it is completely clean and sanitized. Dip the plant's roots in fungicide to kill off any remaining fungal spores before potting into the clean growing medium. Only water the plant when the top inch of the soil is dry and never let the plant sit in water. For plants that are grown in the ground, it's best just to remove the infected plants and destroy them. Do not plant in the same spot until the soil has been allowed to dry out and has been treated with a fungicide.
Learn More more
autodiagnose

Treat and prevent plant diseases.

AI-powered plant doctor helps you diagnose plant problems in seconds.
close
Scars
plant poor
Scars
Any light-colored markings that appear on stems but which do not enlarge or multiply are simply scars that have healed.
Symptom Analysis
Symptom Analysis
Scars form when the plant repairs wounds. They can be the result of people or pets passing by and scraping the plant. Once the underlying issue is resolved, the plant will heal but a scar may remain.
Pests and pathogens can also cause scarring. Insects may attack the plant for a meal, resulting in extensive scarring when a few invaders turn into an infestation. Diseases such as fungus and bacteria can weaken the plant, causing brown spots, mushy areas, or blisters that lead to scars.
Scars occur on stems when a leaf or bud has been lost and the plant has healed. The harder tissue is like a scab that protects a wound.
On other occasions, scars can signal problems from environmental conditions, such as overexposure to sunlight or heat. It might surprise you to know that plants can suffer from sunburn, even desert dwellers like cactus!
Solutions
Solutions
Each source of scarring requires a different approach to help your plant recover.
  1. Protect the trunk and leaves from physical damage like scrapes.
  2. If pests or disease are the cause of scarring, isolate the plant from others to avoid further spread. Some pests can be removed with organic remedies such as a soft cloth and soapy water solution or diluted isopropyl alcohol spray.
  3. Stop sunburn by moving your plant away from direct sunlight and making sure it has the water it needs.
  4. Frequent leaf or bud loss may be due to insufficient light or nutrients.
Prevention
Prevention
Preventing some sources of scarring is easier than others, but all start with careful attention to your plants once you decide to bring them home.
  1. Review specific guidelines for your plant, including soil drainage, watering, and fertilizer requirements.
  2. Inspect plants before planting and use sterile pots and fresh potting soil or media to limit transfer of fungi or bacteria.
  3. Once established, check your plants regularly for signs of scarring or the presence of pests, as it is better to catch problems as early as possible.
Continue reading in our app - it's better
A database of 400,000+ plants
unlimited guides at your fingertips...
PictureThis Ios Download PictureThis Android Download
close
Fruit withering
plant poor
Fruit withering
Fungal infection or normal ripening can cause the fruit to dry out.
Overview
Overview
Fruit withering is common on many tree fruits, including apples, pears, peaches, cherries, and plums, as well as fruiting shrubs. It is caused by a fungal pathogen and will result in wrinkled and desiccated fruit.
Symptom Analysis
Symptom Analysis
Here are the most common symptoms in the order that they are likely to occur.
  1. Both leaves and blossom on the tips of branches will go brown and wither.
  2. Gray powdery patches will appear on infected leaves and flowers, and this will be most apparent after rain.
  3. Any fruit that does appear will turn wrinkled and fail to develop.
  4. Branch tips begin to die, progressing back to larger branches, causing general deterioration of the tree or plant.
Disease Cause
Disease Cause
The withering is caused by one of two fungal pathogens, one called Monilina laxa and the other called M. fructigen. The spores overwinter on infected plant material and are then spread the following spring by wind, rain, or animal vectors. The problem will start to become noticeable in mid-spring, but will increase in severity as summer progresses and the fungus grows. If not addressed, the disease will intensify and spread to other plants in the vicinity.
Solutions
Solutions
There are a number of appropriate solutions to control fruit withering:
  1. Remove any fruit as soon as it shows any signs of infection. Do not compost.
  2. Use a fungicide prior to leaf bud and then as per manufacturers instructions throughout the season.
Prevention
Prevention
Preventative measures include:
  1. Ensuring adequate spacing between plants or trees.
  2. Staking plants that are prone to tumbling to prevent moisture or humidity build up.
  3. Prune correctly so that there is adequate air movement and remove any dead or diseased branches that may carry spores.
  4. Practice good plant hygiene by removing fallen material and destroying it as soon as possible.
Continue reading in our app - it's better
A database of 400,000+ plants
unlimited guides at your fingertips...
PictureThis Ios Download PictureThis Android Download
close
Brown spot
plant poor
Brown spot
This infection can cause brown spots or patches to appear on the plant.
Overview
Overview
Discolored spots on the foliage of plants are one of the most common disease problems people observe. These spots are caused by fungal and bacterial diseases, with most infections related to a fungal pathogen.
Brown spot can occurs on all houseplants, flowering ornamentals, vegetable plants, and leaves of trees, bushes, and shrubs. No plants are resistant to it, and the problem is worse in warm, wet environments. It can occur at any point in the life stage as long as leaves are present.
Small brownish spots appear on the foliage and enlarge as the disease progresses. In severe cases, the plant or tree is weakened when the lesions interrupt photosynthesis or cause defoliation.
Symptom Analysis
Symptom Analysis
In most cases, brown spot only affects a small percentage of the whole plant, appearing on a small amount of the leaves. A small infection only puts minor stress on the plant. However, if left untreated and the disease progresses over numerous seasons, it will severely impact the health and productivity of the infected specimen.
  • Sporulation begins (reproduction of the fungal spores), and tiny spots appear on leaves.
  • Placement is often random and scattered as diseases are spread through raindrops.
  • May appear on lower leaves and the interior of the plant where humidity is higher.
  • Brown spots enlarge and grow large enough to touch neighboring spots to form a more prominent blotch.
  • Leaf margins may turn yellow.
  • Tiny black dots (fruiting bodies of the fungi) appear in the dead spots.
  • Blotches grow in size until the entire leaf is brown.
  • The leaf falls off the plant.
Severe Symptoms
  • Partial or complete premature defoliation
  • Reduced growth
  • Increased susceptibility to pests and other diseases
Disease Cause
Disease Cause
Brown spot, or leaf spot, is a common descriptive term given to several diseases affecting the leaves of plants and trees. Around 85% of diseases exhibiting leaf spots are due to fungus or fungus-like organisms. Sometimes brown spot is caused by a bacterial infection, or insect activity with similar symptoms.
When conditions are warm and the leaf surfaces are wet, fungal spores being transported by wind or rain land on the surface and cling to it. They do not rupture the cell walls but grow in the space between the plant plasma membrane and the plant cell wall. As the spores reproduce, they release toxins and enzymes that cause necrotic spots (i.e., dead tissue) on the leaves, allowing the fungi to consume the products released when the cells degrade.
Solutions
Solutions
In minor cases of brown spot, there isn’t any need to treat the disease. However, if much of the foliage is affected and defoliation occurs, the plant will benefit from getting rid of the infection. It is recommended to start by applying organic treatment options, working up to the more potent synthetic, chemical fungicides if necessary.
Organic options won’t kill the fungus, but will prevent it from spreading.
  1. Dissolve ½ teaspoon of baking soda and one teaspoon of liquid soap in a gallon of water. Using a spray bottle, spray on tops and bottoms of leaves until the mixture drips off. Repeat every two weeks until existing spots stop enlarging and new spots no longer appear.
  2. Spray a copper-based fungicidal soap on the leaves, coating the top and bottom leaf surfaces. Reapply as directed on the product label. Copper penetrates the leaf surface and prevents germination of spores so the fungus cannot spread.
  3. Apply an all-purpose fungicide to the entire plant, following the label instructions carefully.
Prevention
Prevention
Like many other diseases, it is easier to prevent brown spot than cure it, and this is done through cultural practices.
  • Clear fall leaves from the ground before winter to minimize places where fungi and bacteria can overwinter.
  • Maintain good air movement between plants through proper plant spacing.
  • Increase air circulation through the center of plants through pruning.
  • Thoroughly clean all pruning tools after working with diseased plants.
  • Never dispose of disease plant material in a compost pile.
  • Avoid overhead watering to keep moisture off of the foliage.
  • Keep plants healthy by providing adequate sunlight, water, and fertilizer.
Continue reading in our app - it's better
A database of 400,000+ plants
unlimited guides at your fingertips...
PictureThis Ios Download PictureThis Android Download
close
Stem rot
plant poor
Stem rot
Bacterial infection can cause the stems to become soft and rotten.
Overview
Overview
Stem rot is a serious disease and can affect many different types of plants. it can be particularly prevalent when the temperature of the soil is over 16 ℃ and there's a lot of moisture in the soil. This could be from unusually heavy rainfalls or too much irrigation. Once stem rot sets in, it's very difficult to get rid of the disease and most affected plants will have to be discarded. This is especially the case for vegetables, herbs, and other herbaceous plants that have soft stems. This is why it's important to ensure that the soil used for growing these plants is well-drained and that overwatering is avoided. Using good cultural practices also help in curbing these types of fungal diseases.
Symptom Analysis
Symptom Analysis
Plants that have been affected by stem rot will first display a yellowing of the lower leaves. This is followed by obvious wilting and stunted growth.
If the stem of the affected plant is examined closely, there will be some dark discolorations starting near the base and moving upward. If the roots of affected plants are examined, they will appear dark and mushy instead of white and healthy-looking. Eventually, the entire plant will wilt and die.
Disease Cause
Disease Cause
Stem rot is caused by a variety of soil-borne fungus pathogens. The type of fungus depends on the species of plant that is affected. Two fungi responsible for stem rot are Rhizoctonia and Fusarium. These fungal pathogens live in soil and migrate to the plant when conditions are optimum. This includes warm, humid weather and excessive soil moisture. Commonly, vegetable seedlings are affected by these fungi.
Sclerotinia sclerotiorum is another fungus that causes stem rot in plants. This fungus has a host range of over 350 different species of plants. Plants most susceptible to this fungus include many vegetable varieties such as cucumbers, beans, cilantro, carrots, cabbage, melons, lettuce, peas, onions, tomatoes, pumpkins, and squash. This fungus can produce different symptoms in different species. In some cases, the fungus causes irregular spots on stems and other plant material that appear water-soaked. On other plant species, the fungus appears as dry lesions that grow and girdle the stem of the plant.
The third type of fungus that causes stem rot is Phytophthora capsici. Plants that belong to the cucumber family are most susceptible to this fungal infection. This fungus manifests as water-soaked lesions on the stems that then turn brown and girdle the stem.
All of these fungal pathogens are transmitted to the plant by water splashing from the soil up onto the plant. That's because the fungal spores live in the soil where they wait for the right conditions to infect the plants.
Solutions
Solutions
If the plant is only infected a little, it can sometimes be saved. This mainly applies to houseplants that are grown in pots. Here's what to do.
  1. Remove the plant from the pot and gently shake off as much soil as possible.
  2. Using pruning tools that have been disinfected, remove any diseased foliage and roots.
  3. Be sure the new pot has good drainage holes and wash it with one part bleach and nine parts water to ensure that it is completely clean and sanitized.
  4. Dip the plant's roots in fungicide to kill off any remaining fungal spores before potting into the clean growing medium.
  5. Only water the plant when the top inch of the soil is dry and never let the plant sit in water.
For plants that are grown in the ground, it's best just to remove the infected plants and destroy them. Do not plant in the same spot until the soil has been allowed to dry out and has been treated with a fungicide.
Prevention
Prevention
For outdoor gardens:
  1. Raking the garden thoroughly in the springtime will help to cut down on pathogens that may be living in the soil.
  2. Using a copper fungicide on plants in the springtime will cut down on fungal growth and prevent the spread of infection.
  3. Placing a heavy layer of mulch on top of the soil will also prevent pathogens from splashing up onto the stems of plants.
  4. Place plants at the recommended spacing to encourage better air flow between them.
  5. Water plants at the base instead of overhead to prevent excessive moisture on foliage.
For indoor plants:
  1. Avoid overwatering houseplants and ensure the roots do not sit in water.
  2. Make sure that indoor plants receive adequate air circulation and light.
Continue reading in our app - it's better
A database of 400,000+ plants
unlimited guides at your fingertips...
PictureThis Ios Download PictureThis Android Download
care_more_info

More About Moonlight Cactus

Plant Type
Plant Type
Succulent, Shrub
Lifespan
Lifespan
Perennial
Flower Color
Flower Color
White
Yellow
Pink
Flower Size
Flower Size
7 to 9 cm
Plant Height
Plant Height
2 m
View More Info
plantfinder

Find your perfect green friends.

Plan your green oasis based on your criteria: plant type, pet safety, skill level, sites, and more.
care_faq

Common Problems

Why is its fleshy stem thinner and thinner as it grows?

more more
Thin stems may be caused by insufficient sunlight, insufficient water, or fertilizer deficiency. Move the pot to a brighter place, but avoid sunburn. Increase water and fertilizer.

How do I deal with root or stem rot?

more more
Excess water often leads to root and stem rot. Avoid accumulated water in soil. Prune rotten roots and stems and transplant to a new flowerpot in a well-ventilated place. The soil should be loose and air-permeable as far as possible.

Why doesn't my moonlight cactus ever bloom?

more more
Firstly, it may not be time for the plant to bloom. Time from seedling to blooming can range between 2-20 years or longer. Secondly, the plant may need more sunlight, temperature or fertilizer. Increase the exposure to sunlight and fertilizer appropriately, supplement the fertilizer with phosphorus and potassium, or purchase special fertilizer for promoting blooming of moonlight cactus.

Why does moonlight cactus turn yellow?

more more
Moonlight cactus turns yellow due to overwatering, insufficient sunlight, or pests. Moonlight cactus does not require much water, and excess water leads to root anoxia and root rot. Generally, it does not need to be watered often. Water it only when the soil is completely dry. Remember to drain the water in the flowerpot tray. Sunlight can be increased, but avoid direct exposure to blazing sunlight to prevent sunburn. Remove a small amount of pests with alcohol. For large infestations, spray pesticide.
product icon close
Your Ultimate Guide to Plants
Identify, grow, and nurture the better way!
PictureThis Ios Download PictureThis Android Download
product icon
17,000 local species +400,000 global species studied
product icon
Nearly 5 years of research
product icon
80+ scholars in botany and gardening
ad
product icon close
Continue reading in our app - it's better
A database of 400,000+ plants
unlimited guides at your fingertips...
PictureThis Ios Download PictureThis Android Download
Cookie Management Tool
In addition to managing cookies through your browser or device, you can change your cookie settings below.
Necessary Cookies
Necessary cookies enable core functionality. The website cannot function properly without these cookies, and can only be disabled by changing your browser preferences.
Analytical Cookies
Analytical cookies help us to improve our application/website by collecting and reporting information on its usage.
Cookie Name Source Purpose Lifespan
_ga Google Analytics These cookies are set because of our use of Google Analytics. They are used to collect information about your use of our application/website. The cookies collect specific information, such as your IP address, data related to your device and other information about your use of the application/website. Please note that the data processing is essentially carried out by Google LLC and Google may use your data collected by the cookies for own purposes, e.g. profiling and will combine it with other data such as your Google Account. For more information about how Google processes your data and Google’s approach to privacy as well as implemented safeguards for your data, please see here. 1 Year
_pta PictureThis Analytics We use these cookies to collect information about how you use our site, monitor site performance, and improve our site performance, our services, and your experience. 1 Year
Cookie Name
_ga
Source
Google Analytics
Purpose
These cookies are set because of our use of Google Analytics. They are used to collect information about your use of our application/website. The cookies collect specific information, such as your IP address, data related to your device and other information about your use of the application/website. Please note that the data processing is essentially carried out by Google LLC and Google may use your data collected by the cookies for own purposes, e.g. profiling and will combine it with other data such as your Google Account. For more information about how Google processes your data and Google’s approach to privacy as well as implemented safeguards for your data, please see here.
Lifespan
1 Year
Cookie Name
_pta
Source
PictureThis Analytics
Purpose
We use these cookies to collect information about how you use our site, monitor site performance, and improve our site performance, our services, and your experience.
Lifespan
1 Year
Marketing Cookies
Marketing cookies are used by advertising companies to serve ads that are relevant to your interests.
Cookie Name Source Purpose Lifespan
_fbp Facebook Pixel A conversion pixel tracking that we use for retargeting campaigns. Learn more here. 1 Year
_adj Adjust This cookie provides mobile analytics and attribution services that enable us to measure and analyze the effectiveness of marketing campaigns, certain events and actions within the Application. Learn more here. 1 Year
Cookie Name
_fbp
Source
Facebook Pixel
Purpose
A conversion pixel tracking that we use for retargeting campaigns. Learn more here.
Lifespan
1 Year
Cookie Name
_adj
Source
Adjust
Purpose
This cookie provides mobile analytics and attribution services that enable us to measure and analyze the effectiveness of marketing campaigns, certain events and actions within the Application. Learn more here.
Lifespan
1 Year
Download