All year round
Inspect plants for aphids, paying particular attention to the undersides of leaves and the stem tips. Also look for tiny, white shed skins and for stickiness on the leaves or surrounding surfaces, caused by aphids expelling excess sap.
If you find any aphids, quickly isolate the affected plant from its neighbours. Use a spray bottle filled with water to blast away any visible aphids, or rub them off using your fingers.
Keep a close watch for further outbreaks. If aphids reappear, consider spraying with an insecticide for indoor plants, following the pack instructions. Always take houseplants outside when applying chemicals.
If you find any aphids, quickly isolate the affected plant from its neighbours.
If you prefer not to use chemicals or if the infestation is severe, take cuttings and dispose of the original plant. Choose stems or leaves that are unaffected, snip them off with clean secateurs and wash off any aphids.
Look for signs of viral infection on any plants with aphids. Symptoms vary, but often include leaf discoloration, yellowing and distortion. There is no cure, so dispose of affected plants – don’t take cuttings or compost the plants.