Question From: PENNSYLVANIA
Q: My Black eyed Susans have lots of ugly dark leaves. It stats out rather purple looking -some have a green bump in the dark part of the leaf. What can I do to remedy this problem?
Many Black Eyed Susan varieties are vulnerable to fungal disease and weather: excessive moisture, heat and drought will make it worse. Treating the plants with a fungicide beginning in spring will help keep the disease at bay. It is not a silver bullet. Product must be applied on a regular schedule. Best And Happy Yardening, Nancy.