Rose Curculio
Adult rose curculios, or weevils, are about 1/3 inch long. The curculio can be recognized by its long snout, characteristic for weevils. The snout of this species is black while the rest of the body is bright red with a black undersurface. There is only one generation per season. The adults of that generation begin emerging when roses begin to bud, normally during the first week of June. The adult weevils chew holes in the buds to deposit their eggs. Buds injured in such a fashion may fail to open or flowers will have holes throughout the petals. The small, white, legless grub hatches from the egg and feeds within the bud. This injury further harms developing buds. When finished feeding, the grub will drop to the ground where it will overwinter in the soil. Removing and destroying buds and blooms containing grubs will reduce overwintering populations of grubs. To protect buds when adults are active, make applications of insecticides at weekly intervals until weevils are no longer present.
Control
See Chart 1
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