Quick identification
If you touch the plant and a cloud of tiny white insects lifts off, it is probably whiteflies.
They feed on sap and leave sticky honeydew behind.
Treatment plan
Step 1: Reduce adults
- Sticky traps close to leaves help a lot.
- Lightly vacuuming can reduce numbers if you are careful.
Step 2: Clean undersides
Whiteflies hang out under leaves.
- Rinse undersides thoroughly every few days.
Step 3: Repeat treatment
Insecticidal soap works best with repeats.
- Every 3 to 4 days for 2 weeks is a common schedule.
Prevention
- Avoid overcrowded plants
- Inspect undersides regularly
- Quarantine new plants