Saving Petunias from Caterpillars with Bt

Question: Green caterpillars on every petunia flower, eating blooms. Can plants be saved?

Answer: Yes—Apply Bt (Bacillus thuringiensis) Immediately

• Bt is an organic bacterial insecticide (brands: Dipel, MVP)
• Dust or spray formulation; non-toxic to humans, pets, beneficials
• Highly effective against caterpillars, cabbage worms, hornworms
• Available at garden centers, Gardens Alive, Planet Natural

Application

• Cover all foliage and flowers thoroughly
• Caterpillars stop feeding within hours, die in 1–3 days
• Reapply after rain or per label

Plants will recover and rebloom once pests are controlled. Act fast!