What's eating my black raspberry?

Black raspberry faces aphids that spread devastating viruses, raspberry cane borer, Japanese beetle, and birds hungry for ripe drupelets. Aphids are the most serious threat because they transmit mosaic virus complex, which is incurable. Roguing infected plants, controlling aphids early, and netting at ripening are the key defenses.

Feeds on new growth; more critically, transmits raspberry mosaic virus complex, causing mottled, crinkled leaves, weak growth, and eventual plant death. Remove and destroy virus-showing canes immediately; apply insecticidal soap or neem oil early in the season; plant certified virus-free stock.

Adult beetles girdle shoot tips in a double ring; tips wilt and die (flagging); larvae tunnel down inside the cane. Prune wilted tips several inches below the lower girdle ring and destroy; no chemical controls reliably reach larvae inside canes.

Adults skeletonize leaves from late June onward; heavy infestations can defoliate whole canes mid-season. Hand-pick early morning into soapy water; use row covers during peak flight; avoid pheromone beetle traps near the planting (they attract more beetles than they catch).

Black raspberries are especially attractive to birds; ripe clusters can disappear within hours. Net canes with bird netting from color-break to final harvest; reflective tape deters briefly but birds quickly habituate.