What are the reasons for yellowing leaves on a velvet Calathea

Temperature

Velvet Calathea likes a warm and humid environment, with an optimal growing temperature of 20-28°C. If the temperature is too high or the air is too dry, the leaves of the velvet Calathea will curl, shrivel and turn yellow.

Light

Velvet Calathea is a shade-loving plant, so pay attention to shading when growing it, and never expose it to scorching sun. If exposed to direct sunlight, the leaves of the velvet Calathea will be scorched, with localized dieback appearing along the leaf edges, new leaves stopping growth, and yellowing of the leaves occurring as a result.

Diseases

If the velvet Calathea is kept for a long time in a hot, humid and poorly ventilated environment, the plant will become weak in growth and is prone to leaf blight. Infection generally starts from the leaf margins and leaf tips, with lesions growing from small to large, irregular in shape, red-brown to gray-brown, and the lower leaves of the plant are more severely affected.

Now that you know how to deal with yellowing leaves on a velvet Calathea, do you know what uses the velvet Calathea has? Let's find out together.

What to do when velvet Calathea leaves turn yellow and droop (with solutions) Causes of yellowing and drooping leaves on velvet Calathea

The velvet Calathea can now be seen in many places in our country and is a fairly common plant. Because of its high ornamental value, it is deeply loved by consumers and thus purchased. However, after many people buy it and take it home, improper care leads to yellowing leaves. In fact, there are tricks to avoiding this.

What to do when velvet Calathea leaves turn yellow and droop (with solutions)

1. Care. Basically, for the yellowing and drooping of the velvet Calathea, prevention is the main approach, and there are several key points to note during care. First, the light should preferably be partial shade, avoiding direct sunlight. Water and fertilizer are also important. In summer, keep the potting soil moist and you can mist more often; in winter, control watering. As for fertilizing, during the growing period it is better to apply once every half month, and it should be rich in elements such as nitrogen, phosphorus and potassium.

2. Pruning. If the leaves of the velvet Calathea have already turned yellow and drooped, pruning is needed at this point. First mist the leaves of the velvet Calathea with water, which helps with the pruning and can avoid causing more damage during pruning. Prune away the yellowed and drooping leaves. The specific method is to use scissors to cut off the scorched parts of the leaves, not leaving yellow edges, so that the remaining leaf surface looks green. When pruning, the movements should be as gentle as possible to avoid causing greater damage to the leaves.

Causes of yellowing and drooping leaves on velvet Calathea

1. Too little water in summer. Velvet Calathea likes a somewhat moist growing environment. Summer is relatively dry, and if water is insufficient or the air is relatively dry, the velvet Calathea is prone to scorched edges due to insufficient water supply during care.

2. Low temperature and too much water in winter. In winter, the temperature is relatively low, which easily causes scorched edges on the velvet Calathea. If too much water is given at this time, in severe cases it can cause the rhizomes of the velvet Calathea to rot.

3. Improper fertilizing. Improper fertilizing can also cause scorched edges and curling of the velvet Calathea leaves, mainly referring to too much or too little fertilizer. Too much fertilizer will cause root burn, and the leaves will show scorched edges and curling; too little fertilizer will cause the velvet Calathea to lack certain growth elements, resulting in scorched edges.

4. Direct sunlight. Direct sunlight is not suitable for the velvet Calathea, because overly strong light will scorch and burn the leaves of the velvet Calathea.

What are the main diseases of velvet Calathea

1. Leaf blight. Leaf blight can cause large areas of leaves to dry up. In the early stage of the disease, small reddish wrinkled spots first appear on the leaves, which then quickly expand into round spots, with the lesions appearing light brown and water-soaked. In the later stage, the edges of the lesions turn red-brown. If untreated, it can quickly kill half a leaf or even an entire leaf.

2. Anthracnose. It requires air humidity between 75-90%. Low air humidity will cause leaf curling, leaf blight and scorched edges; this is anthracnose.

3. Leaf spot. Infection generally starts from the leaf margins and leaf tips, with lesions growing from small to large, irregular in shape, red-brown to gray-brown, and the lower leaves of the plant are more severely affected.

Control methods for velvet Calathea diseases

1. Leaf blight. Control method: When the disease occurs, repot promptly, cut off diseased leaves and rotten roots, soak in a thiophanate-methyl solution for 15 minutes, dry and then replant in sterile growing medium, then use chlorothalonil (also known as Daconil) 75% wettable powder, diluted with clean water 600-800 times, spraying once every 7-10 days, for three consecutive sprays, which can effectively bring leaf blight under control.

2. Anthracnose. Control method: Foliar spraying with systemic wettable powders such as carbendazim and thiophanate-methyl at 800-**** times dilution is needed for control. These fungicides can also be diluted 500-600 times to water the potting soil. Afterward, pay attention to misting the leaf surface or the growing environment more often to increase air humidity and reduce the occurrence of anthracnose. For watering, it is best to choose purified water or rainwater; tap water must be left to stand for about 2-3 days before it can be used for watering. Fertilizing should follow the principle of light fertilizer applied frequently, mainly nitrogen fertilizer, and it is best to choose fully water-soluble fertilizers, such as 'Huaduoduo' and other special fertilizers for soilless cultivation.

3. Leaf spot. Control method: Spray with lime Bordeaux mixture of equal proportions for control.

Yellowing leaves on the velvet Calathea are generally caused by fertilizer, water or light, and these aspects need extra attention during cultivation. The velvet Calathea is also easily infected by diseases, so doing a good job of disease prevention and control is also an important factor in ensuring its growth.

How to grow velvet Calathea What to do when velvet Calathea leaves turn yellow

Velvet Calathea, also called mosaic Calathea, has fuzzy leaves with zebra-like dark green stripes and a glossy sheen. So how do you grow velvet Calathea? What to do when velvet Calathea leaves turn yellow? Let's find out together next.

I. How to grow velvet Calathea

1. Temperature: Velvet Calathea likes a warm, humid environment, is not cold-tolerant, and fears dryness. In winter, the growing temperature should not be lower than 10°C, and in summer the temperature should not exceed 35°C, otherwise it is extremely unfavorable to the growth of the velvet Calathea.

2. Watering: Velvet Calathea is very sensitive to water. During the growing season, it must be watered thoroughly to keep the potting soil moist. But do not water too much; overly wet soil will cause root rot and even death. In addition, if the air humidity is low, the leaves of the velvet Calathea will immediately become curled, so during cultivation pay attention to maintaining suitable humidity, especially during high temperatures, mist the leaves more often to increase air humidity.

3. Light: Velvet Calathea likes a partial shade environment and avoids strong direct sunlight. Therefore, when growing velvet Calathea, the light should not be too strong, otherwise phenomena such as yellowing and curling of the leaves will occur. But keeping the velvet Calathea in a completely shaded environment for a long time is also not good, as it will affect the photosynthesis of the velvet Calathea and thus affect its normal growth.

4. Fertilizing: During the vigorous growth period of the velvet Calathea, apply liquid fertilizer once every 1-2 weeks, and appropriately add 1-2 applications of phosphorus fertilizer to maintain the glossiness of the leaves. In winter, when the temperature is low and the plant grows slowly or enters dormancy, fertilizing should be stopped and watering controlled.

5. Pests and diseases: Velvet Calathea is prone to leaf blight and leaf spot, and is harmed by whiteflies, red spider mites and scale insects. During cultivation, observe carefully and treat promptly according to the symptoms once discovered.

6. Repotting: When growing velvet Calathea in pots, repot it every year in May. Mainly cut off some old roots and add new soil for planting. If the plant is relatively large, you can change to a pot one size larger or divide and plant. After planting, water thoroughly and place in a partial shade spot for growing. For potting soil, it is best to choose well-drained leaf mold mixed evenly with 1/3 river sand, and add a small amount of bone meal at the bottom of the pot as base fertilizer. Avoid using heavy clay soil for potting, and the planting depth should be such that the roots are not exposed.

7. Propagation: Velvet Calathea is mainly propagated by division, and the best time for division is in early spring (February and March) after the soil has thawed. The divisions should not be too small, so as not to affect the growth of the new plants. After the new plants are potted, control water and keep them in a partial shade spot for care. Only after new roots have emerged can they be watered thoroughly.

II. What to do when velvet Calathea leaves turn yellow

1. Temperature: Velvet Calathea likes a warm and humid environment, with an optimal growing temperature of 20-28°C. If the temperature is too high or the air is too dry, the leaves of the velvet Calathea will curl, shrivel and develop scorched edges. Therefore, let it grow at a suitable temperature.

2. Sunlight: Velvet Calathea is a shade-loving plant, so pay attention to shading when growing it, and avoid scorching sun exposure. If exposed to direct sunlight, the leaves of the velvet Calathea will be scorched, with localized dieback appearing along the leaf edges, new leaves stopping growth, and the leaf color turning yellow.

3. Diseases: If the velvet Calathea is kept for a long time in a hot, humid and poorly ventilated environment, the plant will become weak in growth and is prone to leaf blight. Infection generally starts from the leaf margins and leaf tips, with lesions growing from small to large and irregular in shape, red-brown to gray-brown, and the lower leaves of the plant are more severely affected. The main pests and diseases are leaf spot and leaf blight, which are controlled by spraying with lime Bordeaux mixture of equal proportions. For pest damage there is whitefly, which is killed by spraying with 25% phosmet emulsifiable concentrate at 1000 times dilution.

The above ishow to grow velvet Calatheaandwhat to do when velvet Calathea leaves turn yellowan introduction. Potted velvet Calathea is suitable for decorative accents in homes, hotels and public places, and is also often used as an accompaniment in flower arrangements.