Detailed Explanation of Key Points for Pest and Disease Control in Polygonatum kingianum

Disease Control

This plant can basically contract diseases during the first three seasons (except winter), so it needs careful maintenance. The main disease that affects them is called leaf spot disease, which can harm both leaves and branches. However, the part mainly affected is still the leaves. There are mainly two types of symptoms that appear.

One type is the appearance of brown spots at the early stage of the disease, but they gradually expand and then turn black. In severe cases, they can also cause premature leaf drop, or even the death of entire branches. The other situation is the appearance of spiral-shaped dark spots on the leaves, and even black mold-like substances growing. In severe cases, this can also cause the leaves to drop early and poor plant growth.

You can choose to plow the soil deeply before planting to remove dead branches. Once this disease appears, control measures should be taken immediately. A certain dose of Bordeaux mixture can be sprayed once every 7 days, and three consecutive sprays are enough.

Pest Control

This pest is quite destructive. From seed germination to rhizome growth, it can harm the plant, and its destructive power is also very strong. If this plant has already died, they will immediately move to other plants, so if no measures are taken once they are discovered, they will quickly "take out" a patch of plants. In addition to causing damage to the plants themselves, the wounds they leave can easily cause secondary damage to the plants, namely diseases. Therefore, timely control is essential when they appear.

Before planting this plant, the soil should be plowed frequently, as this can effectively control the number of surviving larvae. This pest is an underground pest, so its fertilizer requirements are relatively strict. During the planting process, try not to use organic fertilizers and use more chemical fertilizers.