- 1). Remove any visible budworms from the plant by hand. The small, worm-shaped caterpillars can be green, tan, black or red in color.
- 2). Pick all geranium buds and leaves that have small holes or brown spots.
- 3). Cover the ground where the geranium plant is rooted with landscape fabric. This will create a barrier that will block the budworm's larvae from wriggling up and onto the plant.
- 4). Spray some BT, or bacillus thuriengensis, over the affected areas of the plant. This natural insecticide will only harm caterpillars, including budworms. You will probably need several applications.
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