What is the reason for the yellowing of the evergreen? How to remedy the cracking and yellowing of the evergreen leaves

Dieffenbachia is a highly ornamental plant. In addition, it has a good adsorption effect on nicotine and formaldehyde. Many families will place one or two pots of it. So what is the reason for the yellowing of Dieffenbachia? How to remedy the cracking and yellowing of Dieffenbachia leaves? Let's take a look.

What is the reason for the yellowing of evergreen

1. Insufficient light

Dieffenbachia likes to grow in an environment with scattered light. If it grows in a shady environment for a long time, its leaves will easily grow too long, the main manifestation of which is the new leaves turning yellow.

2. Excessive fertilization

Dieffenbachia likes an environment with sufficient nutrients, but it is not tolerant to fertilizer. That is to say, it is necessary to apply thin fertilizers frequently. Too much or too concentrated fertilizers will lead to fertilizer damage, which mainly burns the roots of the plant, manifested by dark brown new leaves, yellowing of old leaves, and burnt leaf tips.

3. Lack of nutrients

Dieffenbachia likes fertile soil, but the concentration must be controlled; if no fertilizer or supplementary fertilizer is applied for a long time, the leaves of the Dieffenbachia plant will droop and turn yellow.

4. Strong light

Dieffenbachia likes to grow in an environment with scattered light. In spring, summer and autumn, it needs to be shaded by 40% to avoid direct sunlight. Too strong light can cause leaf burns and scorch.

5. Overwatering

Too much water in the evergreen pot will cause poor breathing of the plant roots, leading to root rot, yellowing and falling leaves.

How to remedy the cracking and yellowing of evergreen leaves

1. Shade in summer

Although evergreens like warmth, they cannot be exposed to direct sunlight when the temperature is high in summer. In fact, this is the case with many plants. If exposed to the sun for a long time, the leaves will easily dry out and turn yellow.

2. Fertilization

Aglaonema likes lots of fertilizer and water. When repotting in spring, use cake fertilizer as base fertilizer. Nitrogen fertilizer can be applied every 15 days during the growing season. Foliar fertilizer can be used as a supplement. Adequate fertilizer and water can ensure that the leaves of Aglaonema are green. The questioner can give it a try.

3. Repotting

Dieffenbachia grows vigorously. If it is not repotted for a long time, its root growth will be hindered. In spring, you can change to a larger pot according to the size of the plant and prepare a loose, well-drained substrate, which can be mixed with humus and sandy soil, for repotting.

4. Pruning

Cutting off old, weak, and diseased leaves in time is not only good for appearance, but also reduces water and nutrient loss and promotes the germination of new buds.

Why are the leaves of the evergreen a little curled?

1. Although some evergreens are not very lush, the plants are large enough. Once the pot is small, the roots cannot stretch out, and the absorption of water and nutrients will be hindered. This should be the root of all problems. You need to change the pot when the weather is fine.

2. It is a sign of fertilizer deficiency. After repotting, apply some fertilizer to the evergreen, especially phosphorus and potassium fertilizers, to make the branches and trunks strong and its resistance to diseases and pests will also become stronger.

3. The new leaves are curling and the old leaves are gray. This pot of evergreen is still lacking water. It may be that the watering is not timely, or the roots are not growing well and cannot absorb water normally. Pay attention to watering after repotting. When the weather is clear, spray water on the leaves and the surrounding environment appropriately.