Pest identification
What's eating my catharanthus roseus 'titan polka dot'?
Aphids
Signs: Soft colonies on new shoots and buds; honeydew, ants, sooty mould, and stunted growth
Control: Dislodge with water; apply insecticidal soap or neem oil spray; repeat every 5–7 days
Beet armyworm
Signs: Skeletonised young leaves followed by large ragged holes; caterpillars rest in soil or mulch by day
Control: Bt or spinosad spray in the evening; hand-pick; use parasitic nematodes in soil
Spider mites
Signs: Stippled, dull foliage and fine webbing between stems in hot, dry spells
Control: Increase humidity; forceful water spray on leaf undersides; neem oil or miticide if heavy
Keep catharanthus roseus 'titan polka dot' pest-free
Healthy plants resist pests best. Get the basics right:
- What eats madagascar periwinkle (vinca) — the species this cultivar belongs to
- What's wrong with my plant? — the diagnosis apps compared
- Common catharanthus roseus 'titan polka dot' problems & fixes
- Catharanthus roseus 'Titan Polka Dot' watering schedule
- Catharanthus roseus 'Titan Polka Dot' light requirements
- Full catharanthus roseus 'titan polka dot' care guide
Catharanthus roseus 'Titan Polka Dot' pests — FAQ
What is eating my catharanthus roseus 'titan polka dot'?
Catharanthus 'Titan Polka Dot' is a robust large-flowered vinca but aphids, spider mites, and beet armyworm caterpillars can all cause damage during the season. Its alkaloid content deters most browsing animals. Scout new growth weekly in warm weather, as early aphid infestations are straightforward to treat and prevent population explosions.
How do I get rid of aphids on catharanthus roseus 'titan polka dot'?
Soft colonies on new shoots and buds; honeydew, ants, sooty mould, and stunted growth Dislodge with water; apply insecticidal soap or neem oil spray; repeat every 5–7 days
How do I get rid of beet armyworm on catharanthus roseus 'titan polka dot'?
Skeletonised young leaves followed by large ragged holes; caterpillars rest in soil or mulch by day Bt or spinosad spray in the evening; hand-pick; use parasitic nematodes in soil
How do I get rid of spider mites on catharanthus roseus 'titan polka dot'?
Stippled, dull foliage and fine webbing between stems in hot, dry spells Increase humidity; forceful water spray on leaf undersides; neem oil or miticide if heavy