Viewing post #1257768 by sooby - Garden.org

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You are viewing a single post made by sooby in the thread called Spike like growths on the leaves of maple tree.

Aug 30, 2016 1:22 PM CST

Name: Sue
Ontario, Canada (Zone 4b)

They are leaf galls, see:

http://ohioline.osu.edu/factsh...

Also

https://www.google.ca/search?q...

If it's maple spindle gall it is caused by a mite. Definitely won't eat your house!

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