Cedar apple gull fungus

Asked August 20, 2017, 9:14 PM EDT

Hello, I'm wondering what you recommend for apple-cedar gull fungus on junipers trees? Thank you, Jessica 720-331-0684

Weld County Colorado

1 Response

http://planttalk.colostate.edu/topics/insects-diseases/1450-juniper-hawthorn-rust/ will give you information about orange galls you may be seeing on your juniper.

The first part of plant diagnostics is to identify the plant. Would you please send us a photo of your juniper tree and a close-up of the gall you see? Are there apple trees nearby? What do those trees look like? What do their leaves look like? Photos will help us identify the problem so you can treat it effectively.

What you are seeing could be a fungus, Cedar-apple rust (Gymnosporangium juniperivirginianae), which requires two hosts. The life cycle is explained at http://www.missouribotanicalgarden.org/gardens-gardening/your-garden/help-for-the-home-gardener/advice-tips-resources/pests-and-problems/diseases/rusts/cedar-apple-rust.aspx

Hope to see your photos soon, Jessica.