Wisteria leaves turn yellow, what about black spots?

The leaves of wisteria are yellow and spotted. If it is caused by leaf spot disease, the diseased leaves can be removed and sprayed with bactericidal drugs for treatment. If it is caused by insect pests, it can be killed manually first and then sprayed with pesticides for treatment. If it is caused by the lack of a certain nutrient element, it is necessary to adhere to the diligent application of thin fertilizer, comprehensive nutrition, and make up the missing nutrients. If it is caused by excessive watering, you can stop watering, drain the accumulated water and prune the rotten roots.

I. Infectious diseases

Reason: Wisteria leaves are yellow with spots on them, which may be related to diseases. If infected with leaf spot disease, it will lead to yellowing of leaves, and many spots will appear on leaves, which may eventually lead to leaf shedding.

Solution: strengthen prevention at ordinary times, clean up dead branches and rotten leaves in time, remove the diseased leaves after discovering the disease, and then spray bactericidal drugs for treatment.

Second, infected with pests.

Reason: wisteria may be infected with pests in addition to diseases. If infected with pests, pests will gather on the leaves to absorb juice, causing the leaves to turn yellow and appear spots.

Solution: First, judge the species of pests. If the quantity is small, you can kill the pests manually first. If the number of pests is large, pesticides can be sprayed according to the types of pests.

Third, lack of nutrition.

Reason: In the process of growth and maintenance, if a certain nutrient element is lacking, the leaves will turn yellow and spots will appear.

Solution: Fertilize regularly to ensure nutrition, adhere to thin fertilizer, apply Woye water-soluble fertilizer frequently to ensure comprehensive nutrition, and apply fertilizer in time to ensure nutrition after judging the lack of a certain fertilizer.

Fourth, water is boring.

Reason: Too much watering will cause a lot of water in the soil, which will lead to yellowing and long spots on the leaves.

Solution: If you water too much, you need to stop watering, drain the accumulated water and prune the rotten roots.