Black spots on Thujas

and0bMay 5, 2013

Last year I planted 50 Green Giant Thujas. All survived winter but I noticed black spots on leaves and branches. Can someone tell me what it is and what to do with it?


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salicaceae(z8b FL)

Cat or dog urine. It is very distinctive on Thuja.

    Bookmark   May 5, 2013 at 3:37PM
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Thank you!

    Bookmark   May 6, 2013 at 8:19PM
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ken_adrian Adrian MI cold Z5

well .. it would depend on the height.. lol ...

a pic of the whole..

and you might try the conifer forum ... if you dont get a good answer here ...

is it on all the plants....


    Bookmark   May 7, 2013 at 7:51AM
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