Mealybugs Systemic Treatment on string of pearls
What's Happening
String of Pearls' dense, trailing growth makes complete contact treatment of mealybugs difficult. Pests hide in protected stem joints and undersides of pearls. Systemic insecticides (imidacloprid) provide internal protection by making plant sap toxic to feeding insects, addressing the harborage problem that contact treatments miss.
How to Fix It
- 1
For light infestations: Use 70% isopropyl alcohol on cotton swabs to dab visible mealybugs
- 2
For moderate infestations: Apply neem oil spray (1 tsp per quart water) every 5-7 days for 3 weeks
- 3
For heavy infestations: Apply systemic imidacloprid granules to soil per label instructions
- 4
Combine approaches: Start with contact treatment, then apply systemic for residual protection
- 5
Repeat treatment 3-4 times over 6 weeks to catch emerging crawlers from egg masses
- 6
Inspect weekly with magnifying glass, focusing on stem joints and pearl undersides
What You'll Need
How to Prevent It
Apply systemic treatment proactively when bringing new plants home. Maintain 40-50% humidity as mealybugs prefer high humidity. Inspect all new plants under 10x magnification before introducing to collection.