Fennel Pest and Disease Control Methods and Key Technical Points

Diseases

Powdery mildew

In the early stages of the disease, white spots appear on the plant's leaves, then gradually expand, and in severe cases the entire leaf necroses.

Gray mold

This disease mainly affects the plant's leaves and petioles, causing damage and rot to the leaves and petioles when it occurs.

Root rot

As the name suggests, the main affected part is the root. If it occurs during the seedling stage, it will directly cause the seedling to die. If the plant contracts this disease at maturity, it will cause the roots to rot, and with a gentle pull, the plant can be pulled right out of the potting soil. In severe cases, it can also cause the entire plant to die.

Sclerotinia rot

This disease mainly affects the plant's petioles and stems. After infection, they first become soft, then gradually rot.

Viral disease

It can affect the entire plant. The leaves become curled and wrinkled after infection, and it also hinders the normal growth of the whole plant, affecting flowering and fruiting.

Pests

Aphids

This pest starts by damaging the plant's leaves, and it reproduces very quickly. If it is not stopped in the early stages, it can spread across the entire plant in a very short time. In severe cases, it can trigger viral disease in the plant, thereby causing the entire plant to die.

Control methods

When pests and diseases are discovered, in the early stage you can remove them manually, then spray fungicides, etc. In the middle stage, use specialized pesticides for spraying and killing. In the later stage, first prune away the severely affected parts, then repot with fresh soil and replant, and spray pesticides for control.

First, improve the growing environment. During high temperatures, pay attention to cooling and increase air circulation.

When watering routinely, be sure not to let water accumulate in the soil, and do not keep the soil in a constantly moist state for long periods.