Pest identification
What's eating my violet petunia?
Tobacco budworm (Heliothis virescens)
Signs: Round holes chewed through flower buds; buds fail to open or open ragged
Control: Hand-pick caterpillars at dusk; apply Bacillus thuringiensis (Bt) spray to buds at first sign; avoid broad-spectrum insecticides that kill natural enemies
Aphids
Signs: Distorted, curling new shoots; sticky honeydew and sooty mould on leaves
Control: Blast off with a strong jet of water; apply insecticidal soap or neem oil; encourage ladybirds and lacewings
Slugs and snails
Signs: Ragged, irregular holes on leaves and stems near soil level; slime trails overnight
Control: Use iron phosphate pellets or copper tape around containers; hand-pick at night; remove debris where they shelter
Keep violet petunia pest-free
Healthy plants resist pests best. Get the basics right:
Violet petunia pests — FAQ
What is eating my violet petunia?
Violet petunias (Petunia integrifolia) are most threatened by aphids and tobacco budworms outdoors. Aphids cluster on new growth sucking sap, while budworm caterpillars chew holes in buds and flowers. Slugs and snails rasp seedlings at ground level. Whitefly can also colonise in warm, sheltered spots.
How do I get rid of tobacco budworm (heliothis virescens) on violet petunia?
Round holes chewed through flower buds; buds fail to open or open ragged Hand-pick caterpillars at dusk; apply Bacillus thuringiensis (Bt) spray to buds at first sign; avoid broad-spectrum insecticides that kill natural enemies
How do I get rid of aphids on violet petunia?
Distorted, curling new shoots; sticky honeydew and sooty mould on leaves Blast off with a strong jet of water; apply insecticidal soap or neem oil; encourage ladybirds and lacewings
How do I get rid of slugs and snails on violet petunia?
Ragged, irregular holes on leaves and stems near soil level; slime trails overnight Use iron phosphate pellets or copper tape around containers; hand-pick at night; remove debris where they shelter