Tiny white-winged insects that feed on plant sap, weakening plants, and spreading viruses through piercing-sucking mouthparts.
In plain terms
Whiteflies are small, white, flying insects that cluster on leaf undersides. They suck sap, weaken plants, and spread viruses. They're particularly problematic on indoor plants and warm climates. Yellow sticky traps catch adults; insecticidal soap or neem oil kills nymphs. Multiple applications needed because eggs hatch over time.
Why this matters
Whiteflies can devastate plants and are vectors for viruses. Early detection prevents severe infestations.
In practice
Examples
Houseplant infested with whiteflies: yellowing leaves, sticky residue, plant weakens; insecticidal soap spray weekly controls it.
Garden whitefly in warm season: heavy infestation; combination of traps, spray, and insect-suppressive covers needed.
Yellow sticky traps in greenhouse: catches flying adults; reduces population and pest pressure.
Early-stage whitefly infection: light yellow mottling on leaves; control early prevents severe damage.
Practical applications
Scout leaf undersides for white clustering insects or yellow nymphs.
Yellow sticky traps monitor and catch adults; place near infested plants.
Insecticidal soap or neem oil spray weekly until controlled; target leaf undersides.
Improve air circulation; discourages whiteflies.
Avoid pesticides that kill whitefly parasites (natural enemies).