Rust on limbs

Asked May 11, 2019, 12:17 PM EDT

This Spring, I found a number of limbs on trees in my yard that had an orange colored organism on them. Anything to worry about?

Linn County Oregon

1 Response

Thank you for the images of several different kinds of lichen,including a bright orange one, commonly found on slow-growing trees and shrubs.

Lichen is very common throughout the moist portions of Oregon. Some forms are quite fanciful. (See "What are lichens" https://www.fs.fed.us/wildflowers/beauty/lichens/whatare.shtml