Calatheas are exotic and striking plants, appreciated for their colorful foliage and their ability to move in response to light. However, they can present certain problems if they are not provided with the proper environment and care. Yellow, dry, curled leaves These are common symptoms that can alarm the owners of these plants.
If your Calathea isn't looking healthy and vibrant, it's important to identify the underlying cause so you can apply the necessary solutions as soon as possible. In this article, we'll go over the most common problems affecting Calathea leaves and how to solve them to get your plant back in perfect condition.
Why do Calathea leaves turn yellow?
Calathea leaves can take on a yellowish hue due to several factors, such as inadequate watering, exposure to direct sunlight, nutrient deficiencies, or environmental stress. It's essential to evaluate each possible cause in order to take the best corrective action.
Excess or lack of irrigation
One of the most common problems in Calathea care is a inadequate wateringBoth excess and lack of water can cause leaves to turn yellow.
Solution: Make sure to water your plant only when the top layer of the substrate is slightly dry. Use dechlorinated water or let it sit for 24 hours before using it.
Inadequate light
Calatheas do not tolerate direct sun exposure, which can cause yellowing of the leaves.
Solution: Place the plant in a spot with bright indirect light, away from windows with direct sunlight.
Fertilizers and nutrients
A deficit or excess of fertilization can weaken the plant and affect its coloration.
Solution: Apply a balanced fertilizer every 4 weeks during spring and summer.
How to prevent Calathea leaves from drying out
Dry leaves with brown edges are usually a result of a too dry environment or improper watering. Environmental factors can significantly affect plant health.
Insufficient ambient humidity
Calatheas need high humidity levels to stay healthy.
Solution: Use a humidifier near the plant or place a saucer of stones and water under the pot.
Drafts and heating
Dry air from heating or air conditioning can be detrimental to the RH from the environment where the plant is located.
Solution: Place the Calathea away from heat sources and cold drafts.
Why do Calathea leaves curl?
When Calathea leaves curl, it is usually a sign that the plant is dehydrated or stressedThis is a natural defense mechanism to reduce water loss.
Lack of irrigation
If the substrate is completely dry, the leaves of the plant may double as a response to the lack of humidity.
Solution: Water the plant deeply without overwatering. Make sure the water drains properly.
Inadequate temperatures
Calatheas are sensitive to sudden temperature changes and can react by rolling up their leaves.
Solution: Keep the plant at temperatures between 18 and 24°C, avoiding extreme fluctuations.
Pests and diseases in Calathea
Pests such as mites, mealybugs and whiteflies can affect the health of the Calathea, causing damage to its leaves.
Solution: Inspect the plant regularly and wipe its leaves with a damp cloth. If necessary, use neem oil or insecticidal soap to treat infestations. For more information on pest treatment, see our article on how to eliminate mealybugs.
Essential tips for Calathea care
- Usa chlorine-free water for irrigation and keep the ambient humidity high.
- Place the Calathea in a spot with bright indirect light, avoiding direct sun exposure.
- Make sure the substrate has good drainage and prevents waterlogging.
- Apply balanced fertilizer during the growing season to maintain a healthy foliage.
Maintaining a healthy Calathea requires attention to light, irrigation and adequate humidity. If you notice problems with its leaves, identify the cause and apply the appropriate solutions to restore your plant's splendor. With proper care, your Calathea will remain vibrant and full of life for a long time.
