How to deal with common flower-growing diseases such as powdery mildew, leaf blight and leaf spot?

Damping-off

Symptoms: After sowing plant seedlings, the base of the tender stem becomes water-soaked and rots until the seedling topples over. On close inspection, the upper part of the plant still keeps its original color.

Causes: Because the soil is too wet, and it often gets no sunlight. When sowing, the plants are too densely packed and are given too much nitrogen fertilizer.

Method: 1. First remove the remaining healthy seedlings, wash the roots with water, then soak the roots in Duolingjun (carbendazim). Pot them up, keeping the soil moisture, light and temperature appropriate at this time.

2. Dilute chlorothalonil 800 times and use it to disinfect the plants and soil.

Rot disease

Symptoms: The seeds and sprouts die before they emerge from the soil. This is mainly because the soil is too wet and the temperature is low.

Method: Dilute Duolingjun (carbendazim) 800 times and apply it to the soil in the pot to disinfect the soil.

Powdery mildew

Symptoms: In the early stage, small white spots appear on the young leaves and young branches of the plant, and as time goes on the white spots become denser and denser. At this point, if you look at the affected areas, white mycelium appears.

Causes: Too humid, with relatively high temperatures.

Method: Pay attention to the fertilizer ratio; do not make it too high. Increase ventilation. For the affected areas, dilute thiophanate-methyl 1000 times and spray it on the plant.

Anthracnose

Symptoms: After being infected with anthracnose, the plant's leaves, flowers and bulbs develop round or oval pale yellow spots, but with dark brown lesions around the edges. When touched by hand, a slimy substance is felt.

Method: Dilute thiophanate-methyl 800 times, or use the more commonly used Duolingjun (carbendazim), and spray it on the affected parts of the plant. At this time, also increase ventilation, and promptly cut off branches and leaves that are already beyond saving.

Leaf spot

Symptoms: Leaves with leaf spot show oval or round spots, usually gray, brown, black and so on.

Method: This disease is mainly prevented rather than cured; the preventive method is to frequently spray the plant's leaves with Duolingjun (carbendazim).