Whiteflies are tiny white sap-feeding insects that flutter from leaves when disturbed. They gather on leaf undersides, suck plant juices, produce sticky honeydew, and can cause yellowing, mottling, wilting, leaf drop, and black sooty mold. Indoors and in greenhouses, they can persist year-round.
Natural whitefly control is mostly about early detection, isolation, physical removal, sticky traps, pruning, beneficial insects outdoors, and low-impact sprays such as insecticidal soap when necessary. Heavy infestations on low-value houseplants are often best discarded before they spread.
If your problem is aphids, read Aphid Control Without Damaging Plants. If the insects are soil flies, see Fungus Gnats in Potting Soil. If leaves are stippled with webbing, read Spider Mites on Indoor Plants.
Last updated: June 5, 2026.
Quick Answer
To get rid of whiteflies naturally, isolate infested plants, vacuum or rinse adults, remove heavily infested leaves, use yellow sticky traps, inspect leaf undersides, and spray insecticidal soap labeled for the plant if needed. Outdoors, conserve predators and parasitoids because natural enemies often suppress whiteflies. Repeat treatments are usually required because eggs and nymphs remain on leaf undersides.
How to Identify Whiteflies
Whiteflies:
- look like tiny white moths
- are about 1/16 inch long
- flutter when disturbed
- feed on leaf undersides
- have flat nymphs attached to leaves
- produce honeydew
- may cause sooty mold
Adults are easy to see when you tap the plant. Eggs and nymphs require closer inspection.
Step 1: Isolate the Plant
Move infested houseplants away from the rest of your collection. Whiteflies spread easily when adults fly from plant to plant.
Inspect nearby plants, especially:
- poinsettia
- hibiscus
- herbs
- vegetables
- citrus
- fuchsia
- tomato
- pepper
- houseplants recently brought indoors
Step 2: Use Yellow Sticky Traps
Yellow sticky traps attract and catch adult whiteflies. They reduce adult numbers and help monitor whether treatment is working.
Place traps:
- just above the plant canopy
- near leaf clusters
- away from fans
- out of reach of pets and children
Sticky traps do not kill eggs or nymphs, so combine them with leaf treatment.
Step 3: Wash the Plant
Use water to reduce adults and honeydew.
Options:
- rinse leaves in a sink or shower
- use a hand sprayer
- wipe leaf undersides
- vacuum adults gently with a handheld vacuum
Repeat regularly. Whiteflies have overlapping life stages.
Step 4: Prune or Discard
Remove heavily infested leaves if the plant can tolerate pruning. Bag and discard the material.
Discard the whole plant if:
- it is heavily infested
- it is low value
- repeated treatments fail
- nearby valuable plants are at risk
- the plant is already declining
Step 5: Use Insecticidal Soap if Needed
Insecticidal soap can help when it contacts whiteflies directly. Coverage is critical. Spray leaf undersides where nymphs feed.
Precautions:
- use a labeled product
- test a small area first
- avoid hot sun
- avoid drought-stressed plants
- repeat according to label
- do not spray open flowers when pollinators are active outdoors
Beneficial Insects Outdoors
Outdoors, natural enemies may control whiteflies. University of Maryland Extension notes parasite and predator activity can eliminate the need for insecticide sprays in summer. Parasitized whiteflies may appear darker.
Avoid broad-spectrum insecticides that kill beneficial insects.
Prevention
- inspect new plants
- check leaf undersides
- quarantine new houseplants
- remove weeds near gardens
- avoid overfertilizing
- avoid bringing infested plants indoors
- use sticky cards for monitoring
- keep plants healthy
FAQ
Are whiteflies the same as fungus gnats?
No. Whiteflies feed on leaves and flutter from foliage. Fungus gnats fly around potting soil and breed in moist media.
Does neem oil work on whiteflies?
Neem or horticultural oil products may help if labeled for whiteflies and the plant. Coverage and repeat applications are important.
Should I throw away a whitefly-infested plant?
Sometimes yes. If a low-value houseplant is heavily infested, discarding it can protect the rest of the collection.
Why do whiteflies keep coming back?
Eggs and nymphs remain on leaf undersides, and adults can move between plants. Repeat treatment and isolation are necessary.
Related Reading
- Aphid Control Without Damaging Plants
- Fungus Gnats in Potting Soil: Best Treatments
- Spider Mites on Indoor Plants: Complete Fix