What's eating my hoya carnosa tricolor?

Hoya carnosa 'Tricolor' shares pest vulnerabilities with other H. carnosa cultivars. Mealybugs are the primary threat, exploiting the waxy leaf joints and umbels. Spider mites emerge in dry, warm rooms. Scale insects can accumulate on mature woody stems unnoticed for extended periods. Inspect monthly and act fast at first sign.

Fluffy white residue tucked into stem nodes and flower cluster bases; sticky leaves and slowed growth Targeted alcohol swabs on all visible colonies; neem oil spray over entire plant surface; quarantine and re-inspect weekly

Fine webbing and pale speckling on leaf undersides; the pink leaf margins may show discolouration first Raise humidity, mist foliage, and spray with insecticidal soap or diluted neem oil; repeat every 5–7 days until resolved

Waxy brown bumps along stems and mid-ribs; leaves yellow and honeydew encourages sooty mould Manual removal with a damp cloth or soft brush and alcohol; treat with horticultural oil; monitor every two weeks