Worried your tree is dying? Learn how to spot signs of distress and what steps to take to identify the cause and possibly save it.

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

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 how to identify and manage the invasive Tree of Heaven with guidance from UC Master Gardeners of Alameda County. Protect your landscape today!

Our expert guide to selecting, planting, and caring for street trees in Alameda County. Tips on site evaluation, approved species, and proper care.