What's eating my hoya scortechinii?

Hoya scortechinii, a Southeast Asian species grown as a houseplant, is vulnerable to mealybugs, spider mites, and occasional aphid outbreaks on new growth. Mealybugs are the dominant concern indoors. Keeping the plant well-watered and in good light reduces stress that makes infestations more likely to take hold quickly.

Fluffy white deposits in leaf axils and along stems; honeydew and sooty mould if untreated Dab with alcohol-soaked cotton swab; spray whole plant with neem oil (5 ml per litre) every 7 days for a month

Stippled, dull foliage; webbing under leaves in dry indoor conditions Increase humidity; rinse undersides; apply insecticidal soap every 5–7 days for three rounds

Hard shell-like bumps on stems; sticky excretions; leaves turn yellow over time Physically remove with soft brush and horticultural oil; apply insecticidal oil monthly until gone