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Calathea
Calathea
Calathea
Goeppertia picturata
Calathea picturata is a species of plant in the family Marantaceae, native to northwest Brazil. It is a clump-forming evergreen perennial growing to 35 to 40 cm. The leaves are dark green above, purple below, marked heavily with silver along the veins and midriff. It is tender, with a minimum temperature of 16 ℃ required, and in temperate areas is cultivated indoors as a houseplant. Under the synonym Goeppertia picturata the cultivar 'Argentea', with silver leaves edged in green, has gained the Royal Horticultural Society's Award of Garden Merit.
Hardiness Zones
Hardiness Zones
11 to 12
care guide

Care Guide for Calathea

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Fertilizing Care
Fertilizing Care
Water calathea monthly, or every 3-4 weeks, with a half-strength balanced fertilizer or a liquid organic fertilizer, such as seaweed or compost tea. This is not necessary during the winter when the plant is in its dormant season.
Details on Fertilizing Care Fertilizing Care
Soil Care
Soil Care
Loam, Acidic, Alkaline
Details on Soil Care Soil Care
Ideal Lighting
Ideal Lighting
Full sun, Partial sun
Details on Sunlight Requirements Ideal Lighting
Ideal Temperature
Ideal Temperature
11 to 12
Details on Temperature Ideal Temperature
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Calathea
Water
Water
Every week
Sunlight
Sunlight
Full sun
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Questions About Calathea

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Watering Watering Watering
Pruning Pruning Pruning
Sunlight Sunlight Sunlight
What should I do if I over or underwater my Calathea?
Careful observation of the plant will tell you if you have watering issues. If you overwater your plant you’ll notice: a. The leaves of the plant can appear yellow and are prone to yellow-brown patches at the tips of the leaves. b. If the situation is serious, severe drooping and curling of the leaves may be observed. This is due to the fact that overwatering can cause root rot and the plant is already having a hard time absorbing more water. If your Calathea is planted indoor, overwatering is all too easy to do with the plant as it cannot tolerate any standing water. The earlier you notice the overwatering the better. If you see standing water or some leaf change, stop watering! Allow the soil to air out over the course of 3-5 days. If you’re noticing signs of root rot, you’ll need to act fast. You’ll have to remove the plant from the pot or ground and then wash off the roots. Remove any dead or decaying roots while trying to keep as much intact as possible. Throw out all the old soil and clean out the pot then add in new soil. If you’re planting in your garden, remove the old soil and replant it in a new location. While overwatering is an issue, so is underwatering. The Calathea is very sensitive to drought conditions and will quickly decline if they don’t receive consistent watering. Signs of underwatering include: -Curled, pendulous, lifeless leaves; -Some leaves will gradually turn yellow from the bottom; -The edges of the leaves will turn brown. Underwatering tends to be easier to fix than overwatering. Simply increase how often you water the plant. If your plant is drying out quickly, the air might be too dry. Consider increasing the humidity so the soil stays moist for longer. You might also think about moving the plant to a different location if you notice it is getting too much sunlight or the spot is too hot in order to prevent extra evaporation.
Read More more
How often should I water my Calathea?
Generally speaking, you should water the plant around once per week during spring. However, compared to spring you should increase the watering frequency during the summer but decrease that in winter. However, the timing might change based on a variety of factors such as humidity, temperature, soil type, and so on. To further determine the appropriate watering frequency for your Calathea, you should use your finger or Soil Moisture Meter more often to check the soil condition, remember to keep the soil moist but not soggy. Water after the top 1.5-2 inches or so of soil has dried out and build the watering schedule for your Calathea by continually testing. Potted plants are more prone to being overwatered than their outdoor counterparts since it's easier for the water to become contained. Make sure you use a pot with proper drainage holes and well-draining soil. Make sure there’s no excess water in the plant tray before watering. If your Calathea is planted in the ground, rain will allow it to grow better. The Calathea usually needs about 1 inch of rain per week to maintain growth. If rainfall is low, you may need to do additional watering once a week to ensure proper plant growth. Humidity also plays a role in keeping the plants properly watered. Plant can grow in normal room humidity, but it prefers higher humidity if possible - generally around 40 to 60 percent. More humidity means the soil will stay wetter for longer. With indoor plants, you can increase the humidity by placing a small humidifier next to the plant. For outdoor plants, you can mist the plant throughout the day.
Read More more
How can I water my Calathea properly?
There are plenty of viable ways to supply your Calathea with water. If you grow your plant in an indoor pot, for the Calathea in small pots, you can bring your potted plant to your kitchen sink. Then, use the faucet to add water to the container. By holding the pot in your hands, you should easily notice when the water begins to run through the pot’s drainage holes, at which point you can stop watering. The cold temperature will hurt the plants' root system, so please don't do this during winter or in cold climates. Most of the time, watering via your faucet is permissible for the Calathea. However, if the local tap water contains a high proportion of fluorine, chlorine or salts, you should consider using rainwater or lake water. Also, since the Calathea can respond well to overhead watering and watering directly into the soil, you can use a watering can, hose, or just about any tool you’d like to water it. For Calatheaed in the ground, when there is not enough rain, aim the hose at the root system and open the spout for more than 10 minutes to fully water. Tips: The Calathea is quite sensitive to the water you use. They are used to soft, acidic water found naturally. If you live in an area with hard water you can use an at-home water filter to remove any minerals and salts. To get rid of chemicals, you can let your tap water sit out for around 24 hours so that they dissipate. You can also purchase filtered water for your plants. Calathea likes water with 6.5 pH the best. Rainwater is a better choice than tap water, so you can store some rainwater when it's raining for your Calathea.
Read More more
When should I water my Calathea?
Calathea needs the humid conditions tend to keep the plants moist. They do not dry out completely between waterings. However, if soggy is retained, it will tend to make its root system rotten. So people will always water after the top 1.5-2 inches or so of soil has dried out. The depth of testing is often related to the depth of the soil. When the soil depth is around 5 inches, it is recommended to test about 1.5 inches or so (about one-third of the soil depth), and more for larger pots. If you have a Soil Moisture Meter, then watering becomes easy by inserting the same position and when the soil meter is found to be around 3, then watering can be done. If it is still greater than 3 then you will need to wait a little longer until it dries out. Keeping it this way will allow you to avoid overwatering your plants.
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plant_info

Key Facts About Calathea

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Attributes of Calathea

Lifespan
Perennial
Plant Type
Herb
Bloom Time
Summer
Leaf Color
Green
Purple
White
Gray
Silver
Flower Color
White
Purple
Stem Color
Green
Gray
Silver
Purple
Leaf type
Evergreen
Ideal Temperature
20 - 38 ℃
Growth Rate
Rapid

Scientific Classification of Calathea

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pests

Common Pests & Diseases About Calathea

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Common issues for Calathea based on 10 million real cases
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.
Low humidity
Low humidity Low humidity
Low humidity
Low air humidity can cause the edges of the leaves to curl.
Solutions: To help with low humidity, you must apply more moisture to the air. This can be done in the following ways. Mist: Use a spray bottle to mist the plant and surrounding air with water daily. Water your plant regularly. Humidifier: Utilize a humidifier to add moisture to the air. Humidity dome: Place a clear plastic or glass dome above your plant to trap moisture.
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.
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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.
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Low humidity
plant poor
Low humidity
Low air humidity can cause the edges of the leaves to curl.
Symptom Analysis
Symptom Analysis
Your plants’ leaves are curled either upward or downward. Only the edges of the leaves or whole leaves may be curled. You may also notice brown tips on your plants’ leaves.
Both curling edges and entirely curled leaves indicate low humidity or a lack of enough moisture in the air. Plant leaves curl to reduce transpiration and slow water loss.
Solutions
Solutions
To help with low humidity, you must apply more moisture to the air. This can be done in the following ways.
  1. Mist: Use a spray bottle to mist the plant and surrounding air with water daily.
  2. Water your plant regularly.
  3. Humidifier: Utilize a humidifier to add moisture to the air.
  4. Humidity dome: Place a clear plastic or glass dome above your plant to trap moisture.
Prevention
Prevention
Many houseplants naturally grow in humid tropical forests, so try to recreate their natural conditions. To prevent low humidity, don’t allow the air to dry out. You can use a humidity meter to measure the humidity around your plant and adjust if it gets too low.
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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.
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distribution

Distribution of Calathea

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Distribution Map of Calathea

Calathea is indigenous to the tropical rainforests of South America and is naturally found across the northern region of the continent. The species has expanded its range as an introduced and cultivated plant, notably appearing in the humid environments of western South America. Its cultivation status indicates a broad horticultural appreciation beyond its native habitat.
distribution map
Native
Cultivated
Invasive
Potentially invasive
Exotic
No species reported
habit
care_scenes

More Info on Calathea Growth and Care

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Basic Care Guide
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Lighting
Full sun
Thriving under full illumination, calathea is comfortable with partial light as well. Originating from habitats with abundant sunshine, its health and growth are significantly improved with adequate light exposure. However, too much or too little exposure can negatively affect its well-being.
Best Sunlight Practices
Transplant
2-3 feet
The optimal time for resettling calathea is typically during the late spring to early summer (S3-S4), as this ensures ample growing season post-move. Be sure to choose a location that offers filtered sunlight and high humidity. When transplanting, always take care not to damage the delicate root system, ensuring a smoother transition for the plant.
Transplant Techniques
Feng shui direction
North
Calathea, in a general Feng Shui context, is believed to emanate a calming and harmonizing energy, potentially enriching the chi of any space. Its compatibility with the North direction is positive, as water element dominates this directional sector. The plant's lush green leaves may symbolically invite wealth and growth, akin to water nurturing vital energies of life, furthering balance. However, interpretation may vary, as Feng Shui is an intricate art, subject to individual perception.
Fengshui Details
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Plants Related to Calathea

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Tea tree
Tea tree
Tea tree (Melaleuca alternifolia) is a native tree of Australia and will grow to 6 m tall. Commonly found growing along streams and waterways, it has a bushy crown and thin-white paper-like bark. Oil from the leaves of this tree is commonly known as tea tree oil. Blooms from spring to summer with fluffy white flowers. Thrives in full sun and prefers moist, well-drained soil.
Baseball plant
Baseball plant
The baseball plant is a thornless ball that resembles a baseball in appearance. Its smooth sage-green skin has reddish-brown stripes running across it, almost as if it were wearing clothes made from a fabric with delicate, geometric, dark-print patterns, making it extremely distinctive.
Maidenhair vine
Maidenhair vine
Maidenhair vine (Muehlenbeckia complexa) is a semi-deciduous vine that can grow to 4.5 m if it is given suitable supports on which to climb. However, it is most commonly grown as a houseplant. Maidenhair vine provides interesting ground cover.
Mealycup sage
Mealycup sage
The mealycup sage needs either full or partial sun in order to thrive. It can be an annual plant when grown in temperate climates and must be planted in times without frost in less temperate climates. There are a few varieties of mealycup sage, which can produce either violet, blue or white flowers.
Coast Oxtongue
Coast Oxtongue
Coast Oxtongue (Gasteria acinacifolia) is a succulent species endemic to South Africa. Sunbirds are attracted to coast Oxtongue nectar. This is a strictly coastal species and is considered ideal for coastal gardens, as it grows the largest of all the Gasteria species. This plant has cultural value to indigenous peoples of South Africa, some of whom believe it to have magical powers.
Poorjoe
Poorjoe
Poorjoe (Hexasepalum teres) is an annual herbaceous wildflower that grows from 30 to 91 cm tall. It blooms from summer to winter with small pinkish-white flowers. It thrives in full sun with dry soil and is commonly found growing in dunes sandy roadsides and dry locations. Is considered an invasive weed in some areas.
Cape jasmine
Cape jasmine
Gardenia jasminoides is an evergreen shrub with unique, glossy evergreen leaves and stunning flowers. The sophisticated, matte white flowers are often used in bouquets. The exceptional beauty of this ornamental plant has made it a popular and highly appreciated plant amongst gardeners and horticulturalists.
Golden pothos
Golden pothos
The golden pothos (Epipremnum aureum) is a popular houseplant that is commonly seen in Australia, Asia, and the West Indies. It goes by many nicknames, including "devil's ivy", because it is so hard to kill and can even grow in low light conditions. Golden pothos has poisonous sap, so it should be kept away from pets and children.
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Related Plants
Calathea
Calathea
Calathea
Goeppertia picturata
Calathea picturata is a species of plant in the family Marantaceae, native to northwest Brazil. It is a clump-forming evergreen perennial growing to 35 to 40 cm. The leaves are dark green above, purple below, marked heavily with silver along the veins and midriff. It is tender, with a minimum temperature of 16 ℃ required, and in temperate areas is cultivated indoors as a houseplant. Under the synonym Goeppertia picturata the cultivar 'Argentea', with silver leaves edged in green, has gained the Royal Horticultural Society's Award of Garden Merit.
Hardiness Zones
Hardiness Zones
11 to 12
question

Questions About Calathea

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Feedback
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Watering Watering Watering
Pruning Pruning Pruning
Sunlight Sunlight Sunlight
What should I do if I over or underwater my Calathea?
more
How often should I water my Calathea?
more
How can I water my Calathea properly?
more
When should I water my Calathea?
more
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plant_info

Key Facts About Calathea

feedback
Feedback
feedback

Attributes of Calathea

Lifespan
Perennial
Plant Type
Herb
Bloom Time
Summer
Leaf Color
Green
Purple
White
Gray
Silver
Flower Color
White
Purple
Stem Color
Green
Gray
Silver
Purple
Leaf type
Evergreen
Ideal Temperature
20 - 38 ℃
Growth Rate
Rapid
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Scientific Classification of Calathea

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pests

Common Pests & Diseases About Calathea

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Feedback
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Common issues for Calathea based on 10 million real cases
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 About the Brown spot more
Low humidity
Low humidity Low humidity Low humidity
Low air humidity can cause the edges of the leaves to curl.
Solutions: To help with low humidity, you must apply more moisture to the air. This can be done in the following ways. Mist: Use a spray bottle to mist the plant and surrounding air with water daily. Water your plant regularly. Humidifier: Utilize a humidifier to add moisture to the air. Humidity dome: Place a clear plastic or glass dome above your plant to trap moisture.
Learn More About the Low humidity more
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 About the Scars more
icon
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AI-powered plant doctor helps you diagnose plant problems in seconds.
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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.
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Low humidity
plant poor
Low humidity
Low air humidity can cause the edges of the leaves to curl.
Symptom Analysis
Symptom Analysis
Your plants’ leaves are curled either upward or downward. Only the edges of the leaves or whole leaves may be curled. You may also notice brown tips on your plants’ leaves.
Both curling edges and entirely curled leaves indicate low humidity or a lack of enough moisture in the air. Plant leaves curl to reduce transpiration and slow water loss.
Solutions
Solutions
To help with low humidity, you must apply more moisture to the air. This can be done in the following ways.
  1. Mist: Use a spray bottle to mist the plant and surrounding air with water daily.
  2. Water your plant regularly.
  3. Humidifier: Utilize a humidifier to add moisture to the air.
  4. Humidity dome: Place a clear plastic or glass dome above your plant to trap moisture.
Prevention
Prevention
Many houseplants naturally grow in humid tropical forests, so try to recreate their natural conditions. To prevent low humidity, don’t allow the air to dry out. You can use a humidity meter to measure the humidity around your plant and adjust if it gets too low.
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Scars
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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.
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distribution

Distribution of Calathea

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Distribution Map of Calathea

Calathea is indigenous to the tropical rainforests of South America and is naturally found across the northern region of the continent. The species has expanded its range as an introduced and cultivated plant, notably appearing in the humid environments of western South America. Its cultivation status indicates a broad horticultural appreciation beyond its native habitat.
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Native
Cultivated
Invasive
Potentially invasive
Exotic
No species reported
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More Info on Calathea Growth and Care

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Basic Care Guide
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Plants Related to Calathea

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Lighting
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Indoor
Indoor
Outdoor
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Requirements
Full sun
Ideal
Above 6 hours sunlight
Partial sun
Tolerance
About 3-6 hours sunlight
Watch how sunlight gracefully moves through your garden, and choose spots that provide the perfect balance of light and shade for your plants, ensuring their happiness.
Essentials
Thriving under full illumination, calathea is comfortable with partial light as well. Originating from habitats with abundant sunshine, its health and growth are significantly improved with adequate light exposure. However, too much or too little exposure can negatively affect its well-being.
Preferred
Tolerable
Unsuitable
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Artificial lighting
Indoor plants require adequate lighting for optimal growth. When natural sunlight is insufficient, particularly in winter or in less sunny spaces, artificial lights offer a vital solution, promoting faster, healthier growth.
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Indoor plants require adequate lighting for optimal growth. When natural sunlight is insufficient, particularly in winter or in less sunny spaces, artificial lights offer a vital solution, promoting faster, healthier growth.
1. Choose the right type of artificial light: LED lights are a popular choice for indoor plant lighting because they can be customized to provide the specific wavelengths of light that your plants need.
Full sun plants need 30-50W/sq ft of artificial light, partial sun plants need 20-30W/sq ft, and full shade plants need 10-20W/sq ft.
2. Determine the appropriate distance: Place the light source 12-36 inches above the plant to mimic natural sunlight.
3. Determine the duration: Mimic the length of natural daylight hours for your plant species. most plants need 8-12 hours of light per day.
Important Symptoms
Symptoms of Insufficient Light in %s
Calathea thrives in full sunlight and is commonly grown outdoors where it receives ample sunlight. When placed in rooms with inadequate lighting, symptoms of light deficiency may not be readily apparent.
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(Symptom details and solutions)
Small leaves
New leaves may grow smaller in size compared to the previous ones once they have matured.
Leggy or sparse growth
The spaces between leaves or stems of your Calathea may become longer, resulting in a thin and stretched-out appearance. This can make the plant look sparse and weak, and it may easily break or lean due to its own weight.
Faster leaf drop
When plants are exposed to low light conditions, they tend to shed older leaves early to conserve resources. Within a limited time, these resources can be utilized to grow new leaves until the plant's energy reserves are depleted.
Slower or no new growth
Calathea enters a survival mode when light conditions are poor, which leads to a halt in leaf production. As a result, the plant's growth becomes delayed or stops altogether.
Lighter-colored new leaves
Insufficient sunlight can cause leaves to develop irregular color patterns or appear pale. This indicates a lack of chlorophyll and essential nutrients.
Solutions
1. To ensure optimal growth, gradually move plants to a sunnier location each week, until they receive at least 6 hours of direct sunlight daily. Use a south-facing window and keep curtains open during the day for maximum sunlight exposure and nutrient accumulation.2. To provide additional light for your plant, consider using artificial light if it's large or not easily movable. Keep a desk or ceiling lamp on for at least 8 hours daily, or invest in professional plant grow lights for ample light.
Symptoms of Excessive light in %s
Calathea thrives in full sun exposure and can tolerate intense sunlight. With their remarkable resilience, symptoms of sunburn may not be easily visible, as they rarely suffer from it.
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Chlorosis
Chlorosis is a condition where the plant's leaves lose their green color and turn yellow. This is due to the breakdown of chlorophyll from excessive sunlight, which negatively affects the plant's ability to photosynthesize.
Sunscald
Sunscald occurs when the plant's leaves or stems are damaged by intense sunlight exposure. It appears as pale, bleached, or necrotic areas on the plant tissue and can reduce the plant's overall health.
Leaf Curling
Leaf curling is a symptom where leaves curl or twist under extreme sunlight conditions. This is a defense mechanism used by the plant to reduce its surface area exposed to sunlight, minimizing water loss and damage.
Wilting
Wilting occurs when a plant loses turgor pressure and its leaves and stems begin to droop. Overexposure to sunlight can cause wilting by increasing the plant's water loss through transpiration, making it difficult for the plant to maintain adequate hydration.
Leaf Scorching
Leaf scorching is a symptom characterized by the appearance of brown, dry, and crispy edges or patches on leaves due to excessive sunlight. This can lead to a reduction in photosynthetic capacity and overall plant health.
Solutions
1. Move your plant to the optimal position where it can receive abundant sunlight but also have some shade. An east-facing window is an ideal choice as the morning sunlight is gentler. This way, your plant can enjoy ample sunlight while reducing the risk of sunburn.2. It is recommended to trim off any completely dehydrated or withered parts of the plant.
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