Aphids are soft-bodied insects that cluster on tender growth and leaf undersides, feed on sap, and leave sticky honeydew. When they appear on a houseplant, isolate it, confirm identification, and physically reduce the colony before deciding whether treatment is needed. Rechecking for several weeks matters because populations can increase quickly on new growth.
Isolate and inspect new growth, stems, and undersides
Look for clusters of green, black, yellow, or other-colored insects, white shed skins, and honeydew. Ants nearby may be attracted to the honeydew. Inspect neighboring plants that were in contact.
Remove small colonies with water or selective pruning
On plants that tolerate rinsing, a gentle stream can dislodge many aphids. Pinch off heavily infested tips when the plant can tolerate it and clean honeydew. Avoid washing insects into neighboring pots.
If needed, use a labeled contact treatment
Insecticidal soap or other products labeled for the plant can help, but they must be applied as directed and reach the insects. Test a small area and do not increase concentration or mix homemade products to speed control.
Keep checking new growth
Inspect every few days until several checks pass without new aphids. Keep light and watering appropriate to support recovery. If many plants are affected, create a quarantine area and shared plan rather than moving them throughout the home.
Sources
- U.S. Environmental Protection Agency — Integrated Pest Management Principles — Integrated pest management based on identification, prevention, monitoring, and lower-risk controls.