Cane Blight

Cane blight causes browning and death of raspberry and blackberry canes. You notice sudden wilting of affected canes, often with clear boundaries between healthy and dead wood. The fungal disease enters through wounds. Prune out infected canes, disinfect tools, and manage crown insects that create entry wounds.

Remove infected canes. Prune black raspberry in dry weather to force lateral growth so wounds will heal before getting wet again.