Red flowering gum (Corymbia ficifolia) Flower, Leaf, Care, Uses

Sand, Loam, Acidic

Sunlight

Full sun, Partial sun

Hardiness Zones

9 to 11

Planting Time

The wild grape has yellow-green stems with white and papery bark. It produces non-descript flowers that become red grape-like berries in the summer. Humans and animals should ingest no part of the plant because the berries contain toxic levels of tannic acids. The genus’ name, Cyphostemma, originated from the word "kyphos" or “hump” and stemma, meaning “garland.”

Mid spring, Late spring, Early summer

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Red flowering gum

Sunlight

Full sun

Hardiness Zones

9 to 11

Planting Time

Mid spring, Late spring, Early summer

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Questions About Red flowering gum

Watering

Pruning

Sunlight

Temperature

Fertilizing

What is the best way to water my Red flowering gum?

Your Red flowering gum will not be too picky about how you choose to water it. As such, you can use just about any common watering tool to moisten this plant’s soil. Watering cans, hoses, and even cups will work just fine when it is time to water your Red flowering gum. Regardless of which watering tool you use, you should typically apply the water directly to the soil. In doing so, you should ensure that you moisten all soil areas equally to give all parts of the root system the water it needs. It can help to use filtered water, as tap water can contain particles that are harmful to plants. It is also beneficial to use water that is at or slightly above room temperature, as colder or hotter water can be somewhat shocking to the Red flowering gum. However, the Red flowering gum usually responds well to any kind of water you give it.

What should I do if I water my Red flowering gum too much or too little?

For outdoor plants, especially newly planted plants or plant seedlings, they can be prone to lack of watering. Remember that you need to keep watering enough for a few months when the tree is small or just planted. This is because once the roots are established, Red flowering gum can rely on rain most of the time.

When your Red flowering gum is planted in pots, overwatering is often more likely to.When you accidentally overwater your Red flowering gum, you should be prepared to remedy the situation immediately. First, you should stop watering your plant right away to minimize the effect of your overwatering. After, you should consider removing your Red flowering gum from its pot to inspect its roots. If you find that none of the roots have developed root rot, it may be permissible to return your plant to its container. If you do discover signs of root rot, then you should trim away any roots that have been affected. You may also want to apply a fungicide to prevent further damage. Lastly, you should repot your Red flowering gum in soil that is well-draining. In the case of an underwatered Red flowering gum, simply water this plant more frequently.

Underwatering is often an easy fix. If you underwater, the plant's leaves will tend to droop and dry out and fall off, and the leaves will quickly return to fullness after sufficient watering. Please correct your watering frequency as soon as underwatering occurs.

How often should I water my Red flowering gum?

Most plants that grow naturally outdoors can be allowed to grow normally with rainfall. If your area lacks rainfall, consider giving your plants adequate watering every 2 weeks during the spring and fall. More frequent watering is needed in summer. In winter, when growth becomes slower and plants need less water, water more sparingly. Throughout the winter, you may not give it additional watering at all. If your Red flowering gum is young or newly planted, then you should water more frequently to help it establish, and mature and grow up to have more adaptable and drought tolerant plants.

For potted plants, there are two main ways that you can determine how often to water your Red flowering gum. The first way is to set a predetermined watering schedule. If you choose this route, you should plan to water this plant about once every week or once every other week. However, this approach may not always work as it does not consider the unique conditions of the growing environment for your Red flowering gum .

Your watering frequency can also change depending on the season. For instance, a predetermined watering schedule will likely not suffice during summer when this plant's water needs are highest. An alternative route is to set your watering frequency based on soil moisture. Typically, it is best to wait until the first two to four inches of soil, usually ⅓ to ½ depth of the pots, have dried out entirely before you give more water.

How much water does my Red flowering gum need?

When it comes time to water your Red flowering gum, you may be surprised to find that this plant does not always need a high volume of water. Instead, if only a few inches of soil have dried since your last watering, you can support healthy growth in the Red flowering gum by giving it about five to ten ounces of water every time you water. You can also decide your water volume based on soil moisture. As mentioned above, you should note how many inches of soil have dried out between waterings. A surefire way to make sure your Red flowering gum gets the moisture it needs is to supply enough water to moisten all the soil layers that became dry since the last time you watered. If more than half of the soil has become dry, you should consider giving more water than usual. In those cases, continue adding water until you see excess water draining from your pot’s drainage holes.

If your Red flowering gum is planted in an area that gets plenty of rain outdoors, it may not need additional watering. When the Red flowering gum is young or just getting established, make sure it gets 1-2 inches of rain per week. As it continues to grow and establish, it can survive entirely on rainwater and only when the weather is hot and there is no rainfall at all for 2-3 weeks, then consider giving your Red flowering gum a full watering to prevent them from suffering stress.

How can I tell if i'm watering my Red flowering gum enough?

Overwatering is a far more common problem for the Red flowering gum, and there are several signs you should look for when this occurs. Generally, an overwatered Red flowering gum will have yellowing leaves and may even drop some leaves. Also, overwatering can cause the overall structure of your plant to shrivel and may also promote root rot. On the other hand, an underwatered Red flowering gum will also begin to wilt. It may also display leaves that are brown or brittle to the touch. Whether you see signs of overwatering or underwatering, you should be prepared to intervene and restore the health of your Red flowering gum.

How can I water my Red flowering gum at different growth stages?

When the Red flowering gum is very young, such as when it is in a seedling stage, you will need to give it more water than you would if it were at a mature age. During the early stages of this plant’s life, it is important to keep the soil consistently moist to encourage root development. The same is true for any Red flowering gum that you have transplanted to a new growing location. Also, the Red flowering gum can develop showy flowers and fruits when you give them the correct care. If your Red flowering gum is in a flowering or fruiting phase, you will likely need to give a bit more water than you usually would to support these plant structures.

How can I water my Red flowering gum through the seasons?

The seasonal changes will affect how often you water your Red flowering gum. Mainly, during the hottest summer months, you will likely need to increase how much you water this plant, especially if it grows in an area that receives ample sunlight. Strong summer sunlight can cause soil to dry out much faster than usual, meaning that you’ll need to water more frequently. By contrast, your Red flowering gum will need much less water during the winter, as it will not be in an active growing phase. During winter, you can get by with watering once every 2 to 3 weeks or sometimes not at all. For those growing this plant indoors, you should be somewhat wary of appliances such as air conditioners, which can cause your plant to dry out more quickly, which also calls for more frequent watering.

What's the difference between watering my Red flowering gum indoors vs outdoors?

In some cases, your Red flowering gum may not need any supplemental watering when it grows outside and will survive on rainwater alone. However, if you live in an area of little to no rain, you should water this plant about every two weeks. If you belong to the group of people who live out of this plant's natural hardiness zone, you should grow it indoors. In an indoor setting, you should monitor your plant's soil as it can dry out more quickly when it is in a container or when it is exposed to HVAC units such as air conditioners. Those drying factors will lead you to water this plant a bit more often than if you grew it outdoors.

Do I need to prune my Red flowering gum?

Red flowering gum, like most other evergreen trees, absolutely need to be pruned in order for them to grow as happy, healthy trees. Of course, there are lots of reasons that pruning is important, so we’ll talk about those in greater detail. Pruning opens up the inner canopy to airflow and sunlight. Without keeping these pathways open, the inner canopy will be starved of sunlight and air. Therefore, pruning your Red flowering gum is not only advantageous, but it also weakens the impact of pests and infections by separating branches from one another. These benefits are far too easy to reap with Red flowering gum to neglect them. Aside from keeping your Red flowering gum happier and healthier, pruning just makes things look nice and tidy. Who doesn’t love a well-kept tree, anyway?

When is the best time to prune my Red flowering gum?

Red flowering gum can be pruned at different times depending on whether they’re grown indoors or outdoors. For outdoor trees, pruning and trimming should be done when the tree is not actively growing; this generally falls under the colder months of winter, but can vary depending on where you live. However, if you’re growing your Red flowering gum indoors, there are lots of different times of the year when it’s okay to trim lightly. For example, if you’re planning on trimming a bit off the top of just one or two smaller branches, then you can trim nearly anytime. For heavier pruning on indoor Red flowering gum, it’s best to wait until those same colder months when outdoor Red flowering gum wouldn’t normally be actively growing. Red flowering gum should be pruned as needed. Typically, these trees should be pruned to remove any damaged, yellowing, dying, or dead foliage. It is also necessary to prune this plant to remove any shoots that are congested or are crossing.

What should I do after pruning my Red flowering gum?

In order to keep your Red flowering gum growing strong, remove any branches or debris that landed at the base of the tree. Keeping the area clear can prevent weeds and underbrush from crowding out the tree, especially if it’s young. Another great tip is to use raw, organic honey to treat large open wounds on the Red flowering gum where branches were trimmed. The use of honey prevents any pathogens or potential pests from making their way in. It’s also a good idea to water a little extra after pruning for a week or two. Providing them with a little extra water helps them build natural calluses over the exposed core faster, so they can get back to growing into large, Red flowering gum!

How can I prune my Red flowering gum: tips and techniques?

While most of the Red flowering gum won’t need to be pruned until they develop some substantial height, sometimes their branches get a little carried away in the wrong direction. This is why this part of the Red flowering gum needs to be pruned in good time. Tools In order to prune your Red flowering gum properly, you’ll need the proper pruning tools. While smaller plant shears and garden scissors may not cut it (pun intended), handheld clippers, pruners and loppers will certainly help out. For very tall branches that are out of safe reach, use a pole saw with the necessary safety equipment. It’s also a good idea to wear gloves while pruning to avoid any splinters or cuts in general. How to Prune To prune your Red flowering gum, first cut away any dead, dying or diseased branches. Look for pests, irregular growth patterns, and brittle branches or leaves. Snip these off at the branch collar, where the branch intersection is, without scoring the main branch. Next, be on the lookout for extra long branches or leaves that may not be able to support a lot of weight. These branches or leaves will be too heavy and grow downwards, so this can be trimmed back if necessary. Try to find all of the branches that grow either directly up (that are not the primary trunk) and those that grow directly downward. These branches will become an issue because they can effectively block out light and air from inner branches. Trim these back to the branches they stem from as well. If there’s not much space within the canopy for light to reach the center of the tree, you can trim away some excess foliage to make windows for light to shine in.

How many hours of sunlight does Red flowering gum need to grow?

Tropical ornamental plants that prefer full sun need a minimum of 6 hours of direct sunlight per day. These plants are adapted to growing in areas with intense, direct sunlight and require this type of light to thrive. In their natural habitats, they are often found growing in open fields or along the edges of forests, where they receive ample sunlight throughout the day.

What will happen if Red flowering gum doesn’t get enough sunlight?

If tropical ornamental plants that prefer full sun do not receive enough sunlight, they may become leggy and weak. They may also develop yellow or pale leaves, and may stop producing flowers. Over time, these plants may die if they are not given the amount of direct sunlight they need.

What will happen if Red flowering gum gets too much sunlight?

While tropical ornamental plants that prefer full sun need a lot of direct sunlight, they can be damaged by too much sun. If these plants are exposed to intense sunlight for prolonged periods, they may develop sunburned leaves or brown spots. They may also become dehydrated if the soil dries out too quickly in full sun.

How can you protect Red flowering gum from excessive sunlight?

To protect tropical ornamental plants that prefer full sun from excessive sunlight, it is important to choose a location that gets plenty of direct sunlight but also has some protection from the hottest part of the day. If you are growing these plants in containers, you can move them to a more shaded location during the hottest part of the day to protect them from the sun's rays. You can also provide some shade by using a shade cloth or umbrella during the hottest part of the day.

Cautions and tips

It is important to gradually acclimate tropical ornamental plants that prefer full sun gradually to direct sunlight, especially if they have been grown indoors or in a shaded area. Start by placing the plant in direct sunlight for an hour or two each day, gradually increasing the amount of time it spends in direct sunlight over a period of several days or weeks. Be sure to keep an eye on the plant's soil moisture levels when it is exposed to full sun. These plants may require more frequent watering in full sun than they would in a more shaded location. Use a moisture meter or check the soil with your finger to determine when the plant needs to be watered.

What is the optimal temperature for Red flowering gum?

For this tropical plant to thrive, you’ll want to keep them between 75℉ and 90℉ (25-32℃). Each species can handle temperatures outside of this range, but keeping it within several degrees of these limits will ensure they grow to their maximum potential.

As for its extreme temperature limits, any environment below 50℉ (10℃) or above 95℉ (35℃) will begin to hinder its growth and cause various aberrations to its leaves and stems. This is especially true with low temperatures; even a light frost can cause your tropical plants to perish. Cellular death can begin to happen at a rapid pace, with some species dying in as little as 12 to 24 hours.

Does Red flowering gum require different temperatures for different growing phases?

While Red flowering gum doesn’t require any changes in temperature to enter different growing phases, it is important to stay consistent. Wild temperature fluctuations can slow down its growth regardless of its current phase, so it's always better to keep them in a controlled environment. That optimal temperature range of 75℉ and 90℉ (25-32℃) is vital to maintain, especially staying above the lower limit. Going above 90℉(32℃) isn’t ideal, but as tropical plant it won’t suffer too much. On the other hand, going below 50℉ (10℃) (and especially 40℉/5℃) will begin to directly damage this heat-loving plant species.

Does Red flowering gum need different temperatures for different seasons?

Red flowering gum does not need different temperatures for different growing seasons. The most important step in seasonal care is to keep the environment within the optimal temperature range. That's why it's always best to keep this plant indoors. That way, you can control the temperature no matter what the climate is like outside.

Light is also important for tropical species, with all of these plants preferring a partial side level of sun exposure. This means any light they receive needs to be dappled or filtered, with bright but indirect light being the best option when growing your plants indoors. Too much direct sunlight can negatively affect your plant’s leaves, reducing its growth potential.

What are the temperature guidelines to keep your Red flowering gum healthy?

Tip #1: Don’t Leave Your Plant Near Windows in Colder Months

If you want to make sure your plant isn’t exposed to colder temperatures, you may want to keep them away from windows. In colder months like late fall and winter, even the smallest draft can leak cold air into your home through cracks in your windows. While this air usually dissipates and warms up as it travels throughout your home, any plants placed in close proximity to the window will be affected. Move your tropical plants into an area where they will still get bright but indirect light, while making sure they won’t be affected by potential drafts.

Tip #2: If You Find Dry Patches, Your Plant May Be Getting Too Much Sunlight or Heat

You may notice the leaves become white or even scorched on a sunny day. These discolorations and unusual markings usually indicate that a plant is getting too much heat or sunlight, and it may be dehydrated. Excess light and heat will dry out the soil, stopping plants from getting the moisture they need to support their cellular structure. It also slows down or stops the process of photosynthesis, further hindering growth. If ignored for too long, these dry spots can spread and eventually result in the death of your plants.

Tip #3: Avoid Frost at All Costs

Colder temperatures and frost can damage your plants by causing ice crystals or disrupt normal physiological activity. This makes it nearly impossible for water to move freely throughout plant tissue, creating a deficit of moisture in their stems and leaves. You can tell a plant has been damaged by frost if it begins to suffer from hydrosis (it will appear as though it's soaked with water.) If the problem persists, your plants may begin shriveling and turning a dark brown or black hue. After that, the plant will almost certainly die.

What is the best way to maintain the right temperature for my Red flowering gum?

The best way to maintain the right temperature range for Red flowering gum is by keeping an eye on both the climate and humidity. You’ll want to try to keep each species in a room where you have access to climate control, keeping the heat in the temperature range best mimics its natural habitat. The humidity levels will also have a direct effect on temperature, so it's important to monitor these as well. You can artificially raise the humidity of your growing space by using a humidifier or lightly misting the leaves with water.

If you intend to grow this species outside, you may find it difficult to maintain the right balance of temperature and humidity. If temperatures begin to drop or the air becomes too dry, your best option is to find room within your home and move your plant inside. An indoor growing space will allow you to control the climate more closely, helping your plant reach its full potential.

Why do I need to fertilize my Red flowering gum?

Fertilization is important to a Red flowering gum overall health and well-being. With the proper supply of energy and nutrients, your Red flowering gum will develop a healthy array of foliage while also producing a set of sturdy stems and branches.

However, it is the flowers of a Red flowering gum that are often most valuable to the gardeners who grow them. Fortunately, fertilization also helps this plant produce flowers that are large, vibrant, and long-lasting. The reason for this is that the right kind of fertilizer will make it much easier for your Red flowering gum to transfer fuel from its roots through its stems to its flowers. Proper fertilization also keeps this plant's health in good general condition, making it better able to fight off diseases.

When is the best time to fertilize my Red flowering gum?

The main time of year when you should fertilize a Red flowering gum is during the early spring when your plant is exiting its dormant phase and preparing to open its buds. Feeding at this time will give your Red flowering gum plenty of available energy to use to support its overall growth and flower development, but this is not the only time that it is a good idea to feed this plant.

An additional feeding at the end of the season during the fall months can also benefit this plant, although this second feeding does not need to be as large as the first one. Also, some gardeners choose to fertilize their Red flowering gum while they are planting it, but this is not always necessary.

When should I avoid fertilizing my Red flowering gum?

As is the case for many plants, you do not need to fertilize your Red flowering gum during the winter. In winter, a Red flowering gum will be in a dormant phase, which means it does not need to gain much energy from the soil to develop new growth. Fertilizing during winter makes it much more likely that the negative outcomes of overfertilization will occur.

The two main feeding times for a Red flowering gum are during the early spring and the fall. That means that during most of the spring and summer, this plant will not need fertilizer. It is also wise to hold off on feedings if your plant is experiencing excessively hot or dry conditions for whatever reason.

What type of fertilizer does my Red flowering gum need?

While it is often alright to use a general-purpose fertilizer that has even ratios of nitrogen, phosphorus, and potassium, Red flowering gum plants often do best when they receive a specific type of fertilizer. In most instances, the most important nutrients for a Red flowering gum are nitrogen and phosphorus, which is why they should appear in higher volumes in the fertilizer you use compared to the potassium content.

A fertilizer that has an N-P-K ratio of 10-10-8 or something similar should work well. However, it can also be beneficial to apply an organic material such as compost for at least one of your annual feedings. If you choose to use fertilizer, it is most common to use granular fertilizer for a Red flowering gum.

How do I fertilize my Red flowering gum?

Applying fertilizer for your Red flowering gum is a quite straightforward task that any gardener can perform, even those with minimal experience. To feed your Red flowering gum with granular fertilizer, all you need to do is sprinkle the fertilizer on the soil. However, before you do so, make sure that you moisten the soil with water.

Additionally, you can also amend your Red flowering gum plant's soil by adding an organic material like compost or manure. If you want to incorporate one of those amendments into your soil, you should place some of the material on top of the soil. Then use a hand rake to gently work the material into the first few inches of soil without disturbing the roots.

What happens if I fertilize my Red flowering gum too much?

There are several negative outcomes that will occur if your regularly overfertilize your Red flowering gum. First, when you give one of these plants too much fertilizer, you can expect to see leaf discoloration and perhaps some wilting. Excessive fertilization can also lead to fertilizer burn, which will dry out the roots, making them ineffective.

However, the threats of overfertilization do not end there for the Red flowering gum. If you feed one of these plants too much, it may show a lack of flowers or bloom with flowers that are a bit lackluster. Also, an overfertilized Red flowering gum will be weaker overall, show stunted growth, and is more vulnerable to diseases and pest infestations.

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Common Pests & Diseases

Common issues for Red flowering gum based on 10 million real cases

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.

Fruit rot

Soft rot in the fruit can have a variety of causes.

Solutions: Prune out and destroy infected spurs and branches. Correct spacing between plants to reduce wind-born infection. Chemical fungicides may become necessary. Bird deterrents and biological or chemical treatments for insects will reduce fruit damage, making it harder for fungal infections to take hold.

Longhorn beetles

The longhorn beetle is a medium- to large-sized insect with very long antennae and strong jaws. Both its adult and larval stages gnaw on tree trunks, leaving small, round holes.

Solutions: Some longhorn beetles species are native insects, and they cause little damage. Therefore, these don't warrant control. Other longhorn beetles species are invasive pests that were recently introduced from other areas. These species can cause a great deal of damage to hardwood trees. Apply an insecticide containing imidacloprid as a soil injection or trunk injection following product instructions. This will enter into new grow and kill adults who feed on foliage. This will not help save trees that are already infested with large amounts of larvae, but it will save trees located near an infested tree. Contact an arborist for best control practices regarding infected trees. To properly control longhorn beetles, all host plants in a given area must be treated. Contact a local extension agent or state agency. Tracking the spread of longhorn beetles is a key component of their control.

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Distribution Map

Native

Cultivated

Invasive

Potentially invasive

Exotic

No species reported

More Info

Flower Color

Red

Orange

White

Pink

Bloom Time

Late summer, Early fall

Leaf Color

Green

Name story

Red-flower gum

The red flowering gum is a small tree with a self-explanatory common name, but its scientific name contains more uncertainty. Originally categorized as Eucalyptus ficifolia, the red flowering gum was recategorized as part of the Corymbia genus in the 1990s. All of these small trees are still eucalypts, but botanists are divided on whether Corymbia should be a distinct genus from Eucalyptus.

Scientific Classification

Phylum

Class

Order

Family

Genus

Species

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Red flowering gum

Corymbia ficifolia

Also known as: Scarlet-flowering gum

Mid spring, Late spring, Early summer

Planting Time

Care Guide for Red flowering gum

Soil

Sand, Loam, Acidic

Sunlight

Full sun, Partial sun

Hardiness Zones

9 to 11

Planting Time

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Questions About Red flowering gum

Watering

Pruning

Sunlight

Temperature

Fertilizing

What is the best way to water my Red flowering gum?

What should I do if I water my Red flowering gum too much or too little?

How often should I water my Red flowering gum?

How much water does my Red flowering gum need?

How can I tell if i'm watering my Red flowering gum enough?

How can I water my Red flowering gum at different growth stages?

How can I water my Red flowering gum through the seasons?

What's the difference between watering my Red flowering gum indoors vs outdoors?

Do I need to prune my Red flowering gum?

When is the best time to prune my Red flowering gum?

What should I do after pruning my Red flowering gum?

How can I prune my Red flowering gum: tips and techniques?

How many hours of sunlight does Red flowering gum need to grow?

What will happen if Red flowering gum doesn’t get enough sunlight?

What will happen if Red flowering gum gets too much sunlight?

How can you protect Red flowering gum from excessive sunlight?

Cautions and tips

What is the optimal temperature for Red flowering gum?

Does Red flowering gum require different temperatures for different growing phases?

Does Red flowering gum need different temperatures for different seasons?

What are the temperature guidelines to keep your Red flowering gum healthy?

What is the best way to maintain the right temperature for my Red flowering gum?

Why do I need to fertilize my Red flowering gum?

When is the best time to fertilize my Red flowering gum?

When should I avoid fertilizing my Red flowering gum?

What type of fertilizer does my Red flowering gum need?

How do I fertilize my Red flowering gum?

What happens if I fertilize my Red flowering gum too much?

Get tips and tricks for your plants.

Keep your plants happy and healthy with our guide to watering, lighting, feeding and more.

Download the App

Common Pests & Diseases

Common issues for Red flowering gum based on 10 million real cases

Brown spot

This infection can cause brown spots or patches to appear on the plant.

Learn More

Fruit rot

Soft rot in the fruit can have a variety of causes.

Learn More

Longhorn beetles

The longhorn beetle is a medium- to large-sized insect with very long antennae and strong jaws. Both its adult and larval stages gnaw on tree trunks, leaving small, round holes.

Learn More

Treat and prevent plant diseases.

AI-powered plant doctor helps you diagnose plant problems in seconds.

Download the App

Distribution Map

Map

Native

Cultivated

Invasive

Potentially invasive

Exotic

No species reported

More Info

Flower Color

Red

Orange

White

Pink

Bloom Time

Late summer, Early fall

Leaf Color

Green

Name story

Red-flower gum

Scientific Classification

Phylum

Class

Order

Family

Genus

Species

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