For Hemerocallis fulva, the most important disease is rust, which is a kind of fungal disease and belongs to the main disease in the middle and later period. It began to occur in the first ten days of May and became the most serious in June and July. A small amount of yellow spots will appear on the leaves at first, then gradually spread to the whole leaves, eventually leading to the whole plant dying. After the onset of the disease, first remove the diseased leaves to prevent infection of other healthy leaves, and then spray a little Triadimefon or zineb, which can play a good effect.
In the process of growth, it will also be infected with insect pests, mainly including the Indian tailed aphid, spider and snail. These methods of control are different. For the Indian tailed aphid, the main control measures are to eliminate the weeds nearby, cut off the remaining branches and dead leaves, and select the appropriate insecticide, which can be used as bitter tobacco cream. Red spider needs to check the back of the leaf in time, remove the disease and insect branches and leaves, and spray in time. For snails, in addition to timely weed eradication, quick lime powder can be sprinkled to kill snails, and they can also be killed manually, lured by leaves, cauliflower, etc., until snails lurk below, they can be captured in a centralized way.
