The first is called "leaf rust", which is common and well known. We can also know from the name that it mainly harms the leaves of plants. When too much nitrogen is applied, or plants are very dense, it is easy to get sick. When the disease first leaves will be covered with small brown spots, and then will be connected into a piece, and then fall off. If you let it go, the whole branch will dry up. The specific control method is: first of all, the damaged branches and leaves should be removed, preferably burned, so as not to threaten other parts. Then, spray medicine treatment is more effective.
The second is powdery mildew, which makes the young leaves of plants bend and the branches turn yellow. If the treatment is not carried out in time, there will be a phenomenon of broken bars. The disease is easy to occur in the condition of too much fertilizer, bad ventilation and too humid environment. To deal with this disease, first of all, we should clean up the fallen leaves, cut off the diseased branches and deal with them intensively. Then, we will use Baume sulfur mixture.
One of the main pests that can threaten plants is the spring inchworm. The larva will eat the flower bud, and the adult is mainly interested in the leaves. The reproduction speed and development of this pest are very fast, and the food consumption is also very large, so the corresponding harm is relatively large. In serious cases, it may even lead to the death of the whole plant. To deal with this kind of insect, first of all, we should dig deep into the soil and kill the pupae that spend winter or summer underground. Of course, we can also choose to kill them.
