Black Knot

Black knot is a disfiguring and potentially lethal disease of trees and shrubs in the genus Prunus, such as plums and cherries. This factsheet describes symptoms and management.

Sudden Oak Death

Sudden oak death (aka Ramorum) is mostly in California, but can be spread on a variety of nursery plants. This disease should be reported immediately. Learn what to look for in this factsheet.

Mistletoe

Hanging high in trees in warmer climates, mistletoe is a plant that has a long history of myth and tradition dating back to ancient times. To find out more about this interesting group of parasitic plants, read this article…

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