📋 Steps
1
Confirm root mealybug presence
Remove the plant from its pot. Examine the root system and soil closely. White waxy material on roots, white clusters at root tips, or white specks in the soil confirm root mealybugs.
2
Remove the plant from its pot
Work over a plastic sheet to catch soil and any insects. Gently shake soil from roots over the sheet.
3
Rinse roots in warm soapy water
Rinse all soil from roots under warm water. This removes most of the root mealybug population mechanically.
4
Drench roots in diluted insecticide
Mix imidacloprid (diluted per label) or neem oil solution and dip the root ball thoroughly. Allow to drain.
5
Repot in fresh sterile potting mix
Use clean pots and fresh potting mix — any infested soil reintroduces mealybugs. Quarantine the plant from others for 4-6 weeks and monitor for recurrence.
6
Drench with Bti or spinosad monthly
Apply a preventive soil drench with imidacloprid or spinosad monthly for 3 months to ensure complete elimination of remaining eggs and juveniles.
💡 Tips
- Root mealybugs are the most common undiagnosed cause of houseplant decline — if a plant isn't responding to correct care and shows no visible pest on leaves, examine the roots
- New plants from nurseries sometimes carry root mealybugs — examine root systems of new purchases
- Cacti and succulents are particularly susceptible to root mealybugs — check roots of these plants annually