Diseases and Pests of Helichrysum and Their Control

Sclerotium rolfsii

It often occurs in the hot and humid summer and the rainy season. In addition, it is also easy to get sick when the soil is in a moist state for a long time. When it first starts, a white, silky texture will appear on the surface of the leaves, and slowly the roots of the plant will rot.

Prevention and treatment methods

Improve the maintenance environment and completely cut off the plants invaded by diseases. If the situation is serious, replace the potting soil or destroy the plants directly.

Sheath Rust

When the disease occurs, it will appear on the leaves, with small raised spots appearing on both sides of the leaves. In severe cases, it can also be seen on the stems of the plant. This disease will not kill the plant, but it can affect the health of the plant and hinder its normal growth, causing it to gradually become weak from its original strong and sturdy state.

Prevention and treatment methods

First cut off all the diseased parts and destroy them, then spray them with medicine. This disease will not cause the death of leaves, so many friends are reluctant to cut them off, which is a wrong practice. At this time, you must be ruthless and cut them all off.

anthrax

This disease may occur throughout the year, but it is most common in seasons with higher temperatures and greater humidity. When this disease occurs, it starts from the top of the leaves and slowly spreads downwards. In severe cases, it can cause the death of plants.

Prevention and treatment methods

Similarly, you need to improve the maintenance environment first, and then spray the medicine. In serious cases, all soil and soil may be destroyed directly.

Scale insects

This pest is prone to occur when the air circulation is poor, the humidity is high, and the temperature is high. The main reason is that this pest has a short reproduction cycle and a fast speed.

Prevention and treatment methods

In serious cases, you can use medicine to spray and kill it. If it just occurs, you can use a brush to brush it off.