The larva of buccal geometrid will eat the leaves of buccal poplar, making the leaves of buccal poplar mesh and even leave nothing in the whole leaf. After eating the leaves, it will then eat the next leaf, which is very harmful.
In fact, the control method of Inchworm is very simple, starting from pupae and adults respectively. First of all, in winter and spring, find out the pupae on the leaves, and then eliminate them all, so as not to hatch the larvae. Then, use the black light to trap all the adults.
Aphids will not only harm boxwood, but also other trees and plants. Moreover, the reproduction ability of aphids is very strong. If boxwood is infected with aphids and is not treated in time, the whole tree will be destroyed.
There are many ways to control aphids. First of all, weeds should be removed, especially those with eggs. It's better not to leave any of them. The next thing is simple. You can use physical methods to trap and kill the remaining aphids, or spray pesticides to completely eliminate them.
The harm of Tetranychus is that Tetranychus will suck the leaves on the back of boxwood and make it lose nutrients.
The first method is to attract some ladybugs, which are the natural enemies of Tetranychus. The spray can be sprayed. It must be spraying on the leaves. When spraying, we should pay attention to our safety.
Leaf spot disease, also known as leaf blight, appears brown spots on the leaves in the early stage. In the middle stage, the spots become larger and larger. In the later stage, the spots will become one, eventually leading to the withering and death of the whole leaf.
The control method is to collect the dead leaves in winter, burn them or bury them deep. When planting, select robust trees for planting to improve the survival rate. Spray medicine regularly in spring to remove the source of disease.
It is very similar to leaf blight, but the disease spot begins to expand from the edge and presents an oval shape. The center of the disease spot is gray white. In the later stage, small black spots will appear on the disease spot.
The control method is to collect dead leaves in winter, burn them or bury them deep to reduce the source of disease. When planted in gardens, we should strengthen management and improve the immunity of trees. Spray some carbendazim wettable powder to get rid of germs.
