Kia from Madison writes
Garden Tech Daconil Fungicide Concentrate is not labeled to control Verticillium wilt. Verticillium wilt is a serious fungal disease that causes injury or death to many plants, including trees, shrubs, ground covers, vines, fruits and vegetables, and herbaceous ornamentals. It is a disease of the xylem, or water-conducting tissues, in the plant. This fungal disease lives in the soil. It invades susceptible plants through their roots and spreads through the plant's vascular system. Verticillium wilt can't be cured once it enters the plant. It's best to remove and destroy small, easily replaced plants. The disease remains in the soil after you remove the plant, so don't plant another susceptible species in the same area. Verticillium treatment for trees and shrubs focuses on giving the plant the best possible care to build up its resistance. Water the plant regularly, and when possible, provide afternoon shade. Fertilize on schedule, using a low-nitrogen, high-phosphorus fertilizer. Prune off dead and dying branches. At this time, there is no known chemical control for this disease. You may want to contact your local cooperative extension and speak with the master gardener to see what they say about the fungus as well.
Answer last updated on: 06/18/2021