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Garden Pests and Diseases: Need advice black spot on Knock out cane?, 1 by Marmel41

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Subject: Need advice black spot on Knock out cane?

Forum: Garden Pests and Diseases

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Photo of Need advice black spot on Knock out cane?
Marmel41 wrote:
Hi.. I thought I was having problems with slugs from holes in leaves so starting using a neem treatment. As I went out to do a check on the bush, I realized I might have a larger problem? Is this Black spot on the canes? Is this something that means Yank by attaching to an SUV and don\'t look back or is it a harsh cut down now or in the fall? I appreciate any advice.