Diseases

Learn how to prevent and treat peach leaf curl with expert advice from the Master Gardeners of Alameda County. Keep your peach trees healthy and productive!

The black stuff on your leaves is likely sooty moldThe black stuff on your leaves is probably sooty mold, a fungal disease growing on plants and other surfaces, and it is often seen in the spring and summer. The leaves or stems have a black coating that looks like soot. If you look closely, it is growing…

Learn about one of the major diseases associated with poor water management, oak root fungus (Armillaria root rot), and what you can do about it.

Learn about one of the major diseases associated with poor water management, Phytophthora root and crown rot.