|
|
Phyllosticta leaf spot (fungus) |
Dark leaf spots with concentric rings of expanding infection. |
Generally most apparent in the spring. New growth will obscure damage. Mancozeb can be used if serious. |
|
|
Bacterial leaf spot/blight (bacterium) |
Light-green water-soaked spots turn brown or black, frequently with reddish margin. |
Prune surrounding trees and shrubs to increase air circulation. If necessary, some copper fungicides and fosetyl-al are labeled for this use. |
|
| University Outreach and Extension does not endorse commercial products. Follow the label on all pesticides. |
