Insects that frequently attack geraniums include aphids, cabbage loopers, and fall cankerworms. The four-lined plant bug, scale, and slugs can also cause damage. Properly identify the insect pest and control with the recommended insecticide.

How do you get rid of geranium bugs?

Spray your geraniums with insecticidal soap every other day as long as you see signs of pests, covering the tops and bottoms of the leaves. This helps control several pests, including aphids. The soap kills greenhouse whiteflies, which you can spot as tiny white dots on the bottom of leaves.

What is causing holes in my geranium leaves?

Tobacco budworms are a major pest of tobacco and cotton plants. They can also wreak havoc as caterpillars on geraniums in your garden by chomping holes in buds and leaves. Tobacco budworms can eat entire buds off the plants. They may also eat deep holes into the core of the buds.