Rose Insects Tape Message Roses are attacked by many insects and related pests. Common pests include aphids, Japanese beetles, mites and thrips. Rose aphids are small, pink or green insects. They are found in clusters on twigs and buds where they suck plant sap. Their feeding results in distorted growth.
Heavy infestations can reduce numbers of blooms.
Several natural enemies feed on aphids, keeping them under control except in cool weather. Aphids can be removed with a strong stream of water. Insecticides are available, but aphids are very difficult to control because they multiply so rapidly. In addition, insecticides kill their natural enemies. Adult Japanese beetles are metallic green and use their chewing mouthparts to feed on leaves, buds, and flowers.