Serviceberry disease or fungus

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pbyrley Wake Forest, NC(Zone 7b) Dec 21, 2009

I forget which variety I have now, A. canadensis I think, and I don't know what the previous one was.

My tree blooms nicely but the berries get a orange colored covering that sticks out from the berry like lots of little hairs or bristles. I have never gotten to taste a serviceberry. This is my second tree. The first was bought 100 miles west of Charlotte NC where I lived then. When we moved to Raleigh, I bought a new one at the U of NC State's hort. club sale. The first year it bloomed, it got the same orange things on the berries. I meant to take photos of it last Spring but I forgot.

I don't know that I would spray but I wondered at least if you knew what caused the disease and what to do.

Thank you,

Paul

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krowten Greensburg, PA Dec 22, 2009

Gymnosporangium rusts (Cedar Apple rust and its relatives) might be a possible cause. Check out this site:
http://www.ag.ndsu.edu/pubs/plantsci/hortcrop/pp454w.htm#Cedar

I have not seen this on my Juneberries. Sulphur and other appropriate antifungals may help.

Post #7390276
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krowten Greensburg, PA Dec 22, 2009

http://ccesuffolk.org/assets/Horticulture-Leaflets/Gymnosporangium-Rust-The-Three-Common-Cedar-Rust-Diseases.pdf

is a site with some color pics

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