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Blackberry Diagnostic Tool

Fruit Are Discolored or Have Spots

The cause of white drupes in blackberries is unknown, some think it may be due to stink bug damage during bloom, sun scald around harvest or another unknown physiological disorder. Apache appears to be especially vulnerable. Here are some examples.

Stink bug?

Stink Bug

Sun scald?

Sun Scald

Unknown physiological disorder

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