The Q&A Archives: Worm eating holes in petunias

Question: What is the small worm that is eating large holes in the flowers of my petunias? How do I get rid of it? I live in Southern California.

Answer: The worm is tobacco or geranium budworm, often common in Southern California. You can control the critter with pyrethrin products or BT, a biological control sold as Dipel or Thuricide.

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