When maintaining spring orchid, it is often found that there are round spots on the leaves, which makes the ornamental value greatly reduced. Is Chunlan sick, or do you care improperly?
What is the round spot of Chunlan?
The round spots on the leaves of Cymbidium are caused by anthrax. Anthrax is a common disease of orchids. At the beginning, there will be semicircular spots on the leaves, first red brown spots, later brown gradually deepened, and sometimes yellow halo on the edge.
After the plant is infected with the pathogen, the pathogen will overwinter on the diseased leaves of the residual plant in the form of mycelium, so once the diseased plant is found, it should be destroyed immediately.
Strengthen the maintenance, in the daily maintenance, pay attention to ventilation and light transmission, planting shall not be too dense. Pay attention to the temperature in the room. Don't be too sultry.
In rainy season, it is necessary to avoid rainstorm and frost damage.
Spray insecticides in time, especially in extra seasons, spray 50% carbendazim WP 500 times or 50% tobujin WP 500 times, spray once every 10 days or so, spray 3-4 times, and the effect will be achieved.
