What to do if round spots appear on the leaves of Chunlan

What are the circular spots on spring orchids?

Circular spots appear on the leaves of spring orchids, indicating infection with anthracnose. Anthracnose is a common disease of orchids. When it first occurs, semicircular spots will appear on the leaves. They are reddish-brown at first, and the brown color gradually deepens in the later stage, and sometimes there will be yellow halos on the edges.

What should I do if circular spots appear on the leaves of spring orchid?

Once the plant is infected with the pathogen, the pathogen will overwinter in the form of hyphae on the diseased leaves of the stump, so once the diseased plants are found, they should be destroyed immediately.

Strengthen maintenance. In daily maintenance, pay attention to ventilation and light transmission, and avoid planting too densely. Pay attention to the indoor temperature and don't let it get too hot.

In rainy seasons, heavy rains should be avoided and frost damage should be avoided.

Spray pesticides in time for prevention and control, especially in the rainy season, spray 500 times diluted 50 % carbendazim wettable powder or 500 times diluted 50% thiophanate wettable powder, spray once every 10 days or so, and it will be effective after spraying 3 to 4 times.