What's the matter with the white frost on the leaves of Impatiens? What should I do?

1. What is the reason for the white frost on the leaves of Impatiens?

The white frost on the leaves of Impatiens is most likely caused by powdery mildew. This disease mainly harms leaves and tender shoots. It usually occurs in June every year, and by July there will be a layer of white powder on the leaves. In the later stage, it will slowly turn into yellow dots and the color will deepen, which is called dark brown. This is mainly caused by high temperature, high humidity and poor ventilation.

2. What to do if there is white frost on the leaves of Impatiens

If there is white frost on the leaves of Impatiens, it must be disposed of as soon as possible. All diseased leaves should be cut off and completely destroyed. If the disease is serious, the entire plant should be disposed of directly. Afterwards, you need to spray oxycarboxin to completely cure the disease, or you can use thiophanate-methyl, and spray it several times.

3. How to avoid white frost on the leaves of Impatiens

Now that we understand the reason why there is white frost on its leaves, we need to adjust the maintenance methods when caring for it in the later stage. It is best to pay attention to the density when planting, not too dense, so that all plants can be well ventilated and exposed to the sun. In addition, during normal management, you should apply fertilizer frequently and apply more phosphorus and potassium fertilizers to promote vigorous growth. Be careful not to use too much nitrogen fertilizer. Vigorous growth will enhance disease resistance and make it less susceptible to diseases.