Whiteflies on houseplants
Common causes of whiteflies and the first things to check, summarized from 6 PlantGrail care records across 4 plants (as of ).
What causes whiteflies on houseplants?
It depends on the plant and how it is kept, so check the plant pages below. For Peace Lily, the records explain it like this: Whiteflies (Trialeurodes vaporariorum, Bemisia tabaci) are small sap-sucking insects that colonize peace lily foliage, particularly the undersides of leaves. These 1-2mm white insects feed on phloem sap, excreting honeydew that promotes sooty mold growth. Infestations typically occur when new plants introduce pests, or when plants are stressed by low humidity and poor air circulation.
Common first steps
- Isolate infested plant immediately to prevent spread
- Hose down foliage with strong water stream to dislodge adults and nymphs
- Apply insecticidal soap or neem oil (azadirachtin 1% solution) weekly for 3-4 weeks, coating leaf undersides thoroughly
Plants with records for whiteflies
Most records first. Open a plant for its own causes and fixes.
Questions about whiteflies
Which plants have the most records for whiteflies?
bird of paradise, peace lily, hoya, snake plant.
Can whiteflies be prevented?
Quarantine all new plants for 14 days and inspect undersides of leaves with 10x loupe before integrating into collection. Maintain 50-70% humidity with good air circulation to discourage whitefly establishment. Hang yellow sticky traps near plants to monitor for early detection. Avoid over-fertilizing with nitrogen, which produces succulent growth attractive to whiteflies.
What are these records?
This page summarizes 6 PlantGrail care records on whiteflies. Records describe care topics; they are not counts of observed plants or treatment outcomes.