What to Do When Leaves Turn Yellow? Cause Analysis and Solutions

Yellowing from nutrient deficiency

If you only water for a long time without fertilizing, or never repot for years, the plant cannot get nutrients, causing leaves to turn yellow. In this case, you should repot and fertilize regularly.

Yellowing from lack of water

Leaf yellowing caused by long-term watering; the young leaves lack luster, and new leaves shrivel and stop growing. At this point, you must reduce watering. In severe cases, you can remove the pot, place it in a cool shaded spot to dry out, then repot it.

What Causes Spider Plant Leaves to Turn Yellow, and What to Do About Yellowing Leaves

Spider plant (Chlorophytum comosum) is a very common indoor plant. Keeping it at home can beautify the environment and purify the air, but if the spider plant gets sick, the owner needs to pay attention. This article explains what causes spider plant leaves to turn yellow, and what to do about yellowing spider plant leaves.

Cause 1: Over-fertilization, exceeding the plant's requirements. After fertilizing, the leaves will look glossy and uneven, and later, after part of the root system rots, the leaves turn yellow due to nutrient deficiency.

Solution: At this point, you should stop fertilizing and water more, or wash the root system once, and replacing the soil is also a good option. It is clear that the soil solution concentration matters a great deal.

Cause 2: The soil has not been turned for a long time, and the soil has become compacted. When all the nutrient elements in the pot are used up, the lack of the three most important elements - nitrogen, phosphorus, and potassium - gradually turns the leaves yellow.

Solution: At this point, you should replace the soil or promptly switch to fertile loam and water with alum fertilizer water.

Cause 3: Spider plant is a semi-shade flowering plant, but it still needs light, so you should ensure at least 4-5 hours of light per day. Otherwise, chlorophyll decreases and the leaves turn yellow.

Solution: The best approach is to place it under an indoor incandescent lamp or keep it on a balcony.

Cause 4: The pot soil has poor air permeability and water permeability, causing the pot soil to stay waterlogged for a long time without drying, making root respiration difficult, so the leaves naturally turn yellow.

Solution: At this point, you should loosen the soil in time and control moisture. Fifth, long-term watering without soaking through. The spider plant's roots lose water, and the lower old leaves turn yellow. You should water thoroughly and keep the pot soil warm and moist.

What Is Going On With Amaryllis Leaves Turning Yellow, and What to Do About Yellowing Amaryllis Leaves

It likes a warm, humid climate, with an optimum growth temperature of 18-25°C. It does not like extreme heat, and the sunlight should not be too intense, so it should be kept under a shed. It is afraid of waterlogging. During the winter dormant period, it requires a cool and humid climate, ideally 10-12°C, and must not go below 5°C. It likes humus-rich, well-drained sandy loam. So what is going on with amaryllis leaves turning yellow? What should be done about yellowing amaryllis leaves? Below, the editor of wed114 wedding website brings you the detailed content.

What Is Going On With Amaryllis Leaves Turning Yellow

1. Poor drainage or excessive moisture

Amaryllis likes moisture but dislikes waterlogging and excessive wetness. If a potted plant remains in poorly drained soil for a long time, it can very easily cause leaves to turn yellow.

Remedy: If overwatered, try to place the flowerpot in a ventilated spot, loosen the soil, and speed up water evaporation. If it is too severe, just replace the soil directly.

2. Light is too strong

Amaryllis grows vigorously in sunlight, but the light should not be too strong. Under the scorching sun in summer, the leaves will scorch and turn yellow. At noon, if the light is too strong, shade it appropriately.

Remedy: If the leaves have already been scorched, try to move the plant to a cool place, and after a week move it outdoors with some cover. Do not fertilize; water more. It will gradually recover in about a month.

3. Improper fertilization

Too much fertilizer or application of undecomposed organic fertilizer, especially in a high-temperature environment, can cause fertilizer burn and yellow leaves.

Remedy: The best way to deal with over-fertilization is watering, but do not water too much. Directly place the flowerpot in water and rinse it a few times to lower the fertilizer concentration.

4. Disease

If the plant's environment is stuffy, hot, and humid, it is highly susceptible to disease. Leaf spot and leaf blight can both cause leaves to turn yellow.

Remedy: Remove the yellowed diseased leaves and spray with carbendazim to disinfect.

What to Do About Amaryllis Leaves Turning Yellow

1. Metabolism

If amaryllis leaves turn yellow even with proper care, it is generally normal metabolism of the amaryllis plant. Old leaves will gradually turn yellow and drop. In this case, there is no need to change your care routine; you only need to cut off the old yellowed leaves.

2. Variety differences

There are many amaryllis varieties, no fewer than tulips. Generally, amaryllis leaves are lush green all year round, but golden-edged amaryllis leaves are green with yellow stripes. If the leaves grow smoothly and normally, then it is not caused by any disease, but by a difference in variety.

3. Overwatering

Amaryllis likes moisture but dislikes waterlogging. Whether potted or field-grown, overwatering will cause leaves to turn yellow. Solution: Do not water amaryllis frequently; keeping the pot soil slightly dry is better, but during the growth period it still needs sufficient water. In addition, use soil with good drainage for planting to avoid waterlogging in the pot soil.

4. Light is too strong

Amaryllis likes light, but the light should not be too strong. If exposed to the scorching sun in hot summer, it will cause leaf tips to scorch and leaves to turn yellow. Solution: In midsummer, amaryllis should be kept in a place with less intense sunlight or given appropriate shading measures.

5. Improper fertilization

Applying too concentrated fertilizer to amaryllis or applying incompletely decomposed organic fertilizer, especially when fertilizing in high summer temperatures, will cause fertilizer burn and make the leaves turn yellow. Solution: Do not apply undecomposed fertilizer to amaryllis, and do not apply pure phosphorus fertilizer.

6. Disease infection

When amaryllis suffers from leaf spot and leaf blight, the leaves will also turn yellow. Solution: In the early stage of disease, spray with 50% Tuzet 1000x solution, or 70% Topsin 1500x solution, or 65% zineb 800x solution, etc., once a week for several consecutive weeks.

7. Pest damage

The main pest of amaryllis is red spider mite. When red spider mites appear, amaryllis leaves will also be damaged and turn yellow. Solution: When there are few red spider mites, you can handle them by hand. When it is more serious, you can spray with 40% dicofol emulsifiable concentrate 1000x solution to kill them.

Amaryllis is a flowering plant with fairly good ornamental value, with large and brilliantly colored flowers, a graceful plant shape, and lush green leaves. However, if not cared for properly, amaryllis leaves will turn yellow and affect its ornamental value. Below is a summary of the seven major causes of yellowing amaryllis leaves and their solutions, which we hope will be helpful to everyone.