What are the common pests and diseases of lilies? A detailed guide to prevention and control methods
Pests and diseases can be said to be the greatest threat to plant development, so diagnosis and treatment should be carried out promptly. Below is a brief introduction to several pests and diseases that lilies are prone to, along with prevention and control methods.
Common pests and diseases of lilies and how to prevent and control them
Lily mosaic virus
Symptoms
Also known as "lily latent mosaic virus." The specific symptoms are dark and light brownish-green spots and necrotic spots appearing on the leaves; infected plants grow stunted, the leaves become smaller and their edges curl, and occasionally pale brown spindle-shaped lesions grow on the petals, with the flowers deformed and unable to open fully.
Prevention and control methods
For seed selection, choose virus-free bulbs, and carry out good control of pests such as aphids and leafhoppers. Once the disease infects the plants, immediately pull out and destroy the diseased branches.
Lily leaf spot disease
Symptoms
In the early stage of the disease, small brown spots grow on the leaves and may expand into brown lesions with darker brown edges. Then many black dots appear in the center of the lesions, and in severe cases the entire leaf turns black and dies.
Prevention and control methods
Remove the diseased leaves and spray once with a 500-fold dilution of 65 percent zineb wettable powder to cut off the spread of the virus.
Lily bulb rot
Symptoms
The specific symptom is brown lesions appearing on the lily bulb; in severe cases the entire bulb turns brown and rots.
Prevention and control methods
At the first onset of the disease, choose a 300-fold dilution of 50 percent zineb for spraying.
Lily leaf blight
Symptoms
In the early stage of the disease it appears at the tips of the lower part of the leaves and occurs mainly on the leaves; irregular round lesions of various sizes appear on the diseased leaves, and their color varies by variety, ranging from pale yellow to grayish brown. In severe cases the leaves die.
Prevention and control methods
When cultivating lilies in a greenhouse, ensure ventilation and light transmission and strengthen management; when the disease occurs, remove the diseased leaves and spray every 7-10 days with an 800-1000-fold dilution of 50 percent thiram wettable powder or one application of 1 percent Bordeaux mixture at equal amounts; 3-4 sprays are enough.
Lily disease prevention and control methods
It is said that "long illness makes a good doctor," and the only ones who can become doctors for flowers are us flower lovers, so let us hold up an airtight protective umbrella for our beloved flowers.