What's eating my hoya revoluta?

Hoya revoluta is grown indoors for its distinctive rolled or revolute leaf margins. Mealybugs are the most persistent threat, hiding inside the curled leaf edges where they are hard to spot. Spider mites can colonize the undersides of the rolled leaves. Check inside each leaf curl at every inspection.

Cottony masses hidden inside rolled leaf margins and at stem nodes; honeydew and sooty mold accumulate in folds Use a cotton swab with isopropyl alcohol to reach inside leaf curls; spray neem oil and repeat weekly

Stippling and webbing on leaf undersides and inside rolled edges; leaves dry out or yellow in severe cases Flush leaf undersides with water; apply insecticidal soap or miticide spray; improve humidity and air movement

Flat brown bumps along stems and on leaf mid-ribs; slow growth and sticky, shiny leaf surfaces Scrape off manually; treat with 70% isopropyl alcohol; apply horticultural oil and check again after 2 weeks