Whiteflies: Identification and Control
Whiteflies are tiny white insects that fly up when you disturb the plant. They suck sap and spread disease. Control with yellow sticky traps and neem oil.
They look like tiny white moths, 1/16 inch long. They cluster under leaves.
How to Confirm
- Tiny white insects fly up when you shake the plant
- White or yellow sticky residue on leaves
- Sooty mold (black) growing on honeydew
- Yellowing leaves
Why They’re Bad
- Suck sap from leaves
- Transmit plant viruses
- Excrete honeydew (attracts ants, grows mold)
- Reproduce fast — a female lays 200+ eggs
How to Get Rid of Them
Step 1: Yellow Sticky Traps
Whiteflies are attracted to yellow. Place traps near plants. Replace weekly.
Step 2: Vacuum Them
Use a hand vacuum in the early morning.
Step 3: Neem Oil
Spray in the evening. Repeat every 7 days.
Step 4: Insecticidal Soap
For heavy infestations. Spray under leaves.
Step 5: Remove Severely Infected Leaves
Prevention
- Check new plants before bringing inside
- Keep plants well-spaced (airflow)
- Avoid over-fertilizing
Common Questions
Will whiteflies kill my plant? Rarely directly. But they spread disease and weaken it.
Are whiteflies the same as white mold? No. Whiteflies are insects. White mold is a fungus.
Do they overwinter? Yes, in warm climates or indoors.
Can I eat vegetables with whiteflies? Yes, after washing.
Do yellow sticky traps work? Yes, for monitoring and reducing populations.
What beneficial insects eat whiteflies? Ladybugs, lacewings, parasitic wasps.