What's eating my philodendron billietiae?

Philodendron Billietiae's long, orange-stemmed leaves make it a showpiece that spider mites can quickly ruin with stippling damage. Mealybugs settle in the prominent leaf sheaths and along petioles, while scale insects cling to the thick stems. As a sought-after collector plant, any pest damage is particularly costly — inspect closely at every watering.

Pale stippling across the large leaf surface; webbing under leaves; foliage loses luster and yellows Shower thoroughly, raise humidity above 50%, spray with neem oil or insecticidal soap on a weekly schedule

Cottony white masses in leaf sheaths and along the distinctive orange petioles; honeydew deposits Dab all colonies with isopropyl alcohol; coat plant with diluted neem oil spray; repeat every 5–7 days

Hard brown bumps adhering to stems and petioles; sap loss weakens the plant and slows new growth Scrape manually, then apply neem or horticultural oil; inspect aerial roots and stem joints carefully

Silvery streak marks on leaves; new leaves emerge curled or with deformed margins Isolate the plant immediately; remove damaged foliage; treat with spinosad spray; use blue sticky traps