nurtomiMealybugs
White cotton-like clusters may hide in leaf joints.
What to look for
Look along stems, leaf joints and leaf undersides for white waxy insects. Sticky honeydew or yellowing may accompany them, but white dust alone does not confirm mealybugs.
What to do
Separate a movable plant and inspect its neighbors. Remove small groups with a damp cotton swab or gently rinse suitable foliage. Recheck joints regularly and repeat removal as needed.