thrips on Monstera
Quick answer
If your Monstera has thrips, the most likely cause is: Thrips (Thysanoptera order) are tiny, slender insects that feed by rasping plant tissue and sucking sap, causing silvery stippling, distorted growth, and black fecal specks on leaves. Unlike spider mites that cause fine stippling, thrips damage appears as larger silvery patches with black dots. They reproduce rapidly in warm, dry conditions and can transmit plant viruses. Thrips hide in flower buds, leaf axils, and soil surface debris.
Start here:
- 1. Isolate affected plant immediately—thrips can fly short distances and spread rapidly
- 2. Inspect and prune damaged leaves and spent flowers where thrips hide and breed
Why Monstera gets thrips
Thrips (Thysanoptera order) are tiny, slender insects that feed by rasping plant tissue and sucking sap, causing silvery stippling, distorted growth, and black fecal specks on leaves. Unlike spider mites that cause fine stippling, thrips damage appears as larger silvery patches with black dots. They reproduce rapidly in warm, dry conditions and can transmit plant viruses. Thrips hide in flower buds, leaf axils, and soil surface debris.
How to reverse thrips on Monstera
- 1
Isolate affected plant immediately—thrips can fly short distances and spread rapidly
- 2
Inspect and prune damaged leaves and spent flowers where thrips hide and breed
- 3
Rinse plant with strong water spray to dislodge thrips from leaves and stems
- 4
Apply insecticidal soap, neem oil, or spinosad spray thoroughly, covering all surfaces including leaf undersides and growing points. Repeat every 5-7 days for 3-4 weeks
- 5
Use yellow or blue sticky traps near plants to capture adult thrips and monitor population decline
- 6
For severe infestations: Apply systemic insecticide as soil drench for long-term protection
- 7
Monitor new growth closely—thrips prefer tender shoots. Treat immediately if damage resumes
Keep thrips off this Monstera
Inspect new plants and cuttings thoroughly—thrips often hitchhike on flowers and buds. Remove and discard spent flowers promptly. Maintain moderate humidity (50-60%) to discourage thrips which prefer dry conditions. Use yellow or blue sticky traps to monitor adult populations. Quarantine new plants for 2-3 weeks away from collection.