They also attract ants with the honeydew they excrete, and the honeydew can grow a black sooty mold on it as well. They suck the juices from leaves and stems and cause weak growth. They form cottony looking masses on stems, branches and leaves. Mealybugs: Mealybugs are 1/8 to ¼ inch long flat wingless insects that secrete a white powder that forms a waxy shell that protects them. Burpee Recommends: Introduce natural enemies to the area. Young larvae are pale green and adults are darker with a light line along the side and pink underside. Egg clusters may be evident on foliage with a cottony or fuzzy appearance. You can also wash them off with a strong spray, or use an insecticidal soap.Īrmyworm: Holes in leaves can be singular or clumped together. Burpee Recommends: Introduce or attract natural predators into your garden such as lady beetles and wasps who feed on aphids. They leave a sticky residue on foliage that attracts ants. Common Pest and Cultural ProblemsĪphids: Greenish, red, black or peach colored sucking insects that can spread disease as they feed on the undersides of leaves. Contact your Cooperative Extension Service for fungicide recommendations. Make sure plants have good air circulation. Burpee Recommends: Remove affected plant parts, avoid watering at night and getting water on the plant when watering. It thrives in cool wet weather conditions. Do not work around plants when they are wet.īotrytis: This fungus causes a grey mold on flowers, leaves, stems and buds. Burpee Recommends: Remove infected plants. The disease may also affect and disfigure flower heads.
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