PlantPalTiny white flies under leaves
Gently move a leaf and see whether white insects lift off and settle again.
What to check first
Look underneath for tiny white adults and flat immature insects stuck to the leaf. Whiteflies may leave sticky residue. A flying adult is easier to spot than the young stages.
What to do now
Separate the plant. Gently rinse leaf undersides if the plant tolerates it. Use a yellow sticky card to monitor adults, and inspect nearby plants.
What to watch next
Check the undersides again even if fewer adults fly up. Young whiteflies can remain on the leaves, so repeat gentle removal where you find them.