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Arborvitae orange spores with tenicals. #455624

Asked May 21, 2018, 2:12 PM EDT

We have several small Arbrovitae being infested with this orange fungus? Spore? What is it and how do we treat the epidemic?  We live on 5 Mile Rd in Racine county, Wisconsin.

Racine County Wisconsin

Expert Response

Nice pictures!  The disease is cedar apple rust, a common fungal disease.  

See the following link for information on the disease, including control strategies.

http://www.ipm.msu.edu/diseases/cedar_apple_rust

This bulletin has more detailed information on chemical management strategies.

http://extensionpublications.unl.edu/assets/pdf/g1907.pdf

An Ask Extension Expert Replied May 25, 2018, 3:51 PM EDT
Bill Shane!  Thank you for your response to our posting of our problem.  Our Fifty plus year old orchard of primarily Red Delious apples has been in decline for the last several years and these Juniper trees have been seeded by the bird population across our ten acres.  Not sure how we will combate this problem, but thank you for your time and information.  
Sincerely 
Marilee Eirschele
The Question Asker Replied June 05, 2018, 1:22 PM EDT

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