Tarnished plant bug feeding is also thought to be a possible cause of 'blond drupelets'. In Pennsylvania, they caged fruit clusters with tarnished plant bugs and saw the symptoms. If this is an Eastern Thornless Blackberry, it is important to note that they are late ripeners. The information given herein is supplied with the understanding that no discrimination is intended and no endorsement by the Purdue University Cooperative Extension Service is implied. Any person using products listed assumes full responsibility for their use in accordance with current direction of the manufacturer.
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