Disease and Pest Control of Cypripedium

Common diseases

Sheath Rust:

This disease will appear on the front and back of the leaves of the Cyperus rotundus, with small raised bumps similar to blisters, containing powdery spores in orange, yellow, purple-black and rusty colors. Sheath rust will not cause the death of the Cyperus rotundus or cause its leaves to wither. It will only affect the growth rate of the Cyperus rotundus, making it increasingly weaker.

Prevention and treatment methods:

Observe frequently. If similar symptoms are found, cut off the diseased leaves immediately, or use Zineb or copper-containing fungicides to kill and disinfect.

White rot:

The disease mostly occurs during the rainy season. When the disease first starts, the leaves will show many white filamentous pathogens, which will cause the roots of the slippery orchid to slowly rot and die.

Prevention and treatment methods:

Replace all the soil in which the diseased Cyperus was planted. Sprinkle lime and other agents on the new soil for disinfection and prevention. In daily management, attention should be paid to ventilation and light transmission, soil drainage, and no water accumulation should occur. If the white rot is serious, burn the plants directly. To prevent future troubles.

anthrax:

This disease can occur throughout the year, but the probability of occurrence is higher during the rainy season in the hot summer. The disease is also contagious. The disease starts from the top of the leaves of the Cyperus rotundus and gradually spreads to the entire plant. At first, the leaves will turn brown, and as they expand, many small black spots will appear, which can cause the orchid to die to a certain extent.

Prevention and control measures:

You can use methyl thiophanate to spray the diseased area about once a week, and then spray Bordeaux mixture on the diseased area about once every 2 weeks. Spray continuously for about 5 times.

Common pests

Scale insects:

This insect will appear when the temperature is too high, the humidity is too high, and the ventilation is poor, and it reproduces faster in this environment.

Prevention and treatment methods:

Sand blasting can be done with omethoate or malathion.