What's eating my philodendron domesticum?

Philodendron domesticum (spade-leaf philodendron) is a robust climbing houseplant most commonly attacked by spider mites and mealybugs. Its large smooth leaves are easy to inspect. Problems usually arise when the plant is kept too dry or in poor airflow. Wipe the leaves monthly and apply neem oil at the first sign of trouble.

Pale yellow stippling on upper leaf surface; fine silk webbing on undersides; accelerated in hot, dry indoor conditions Mist or shower the plant; apply neem oil or insecticidal soap to all surfaces; repeat every 7 days for 3–4 cycles

Cottony white clusters at leaf axils and stem nodes; sticky honeydew; reduced growth and leaf yellowing Spot-treat with isopropyl alcohol; spray entire plant with insecticidal soap; check every 10 days and retreat as needed

Soft green or black insects clustered on new growth and petioles; curled or puckered young leaves; honeydew residue Knock aphids off with a strong water spray; apply neem oil or insecticidal soap; beneficial insects (ladybugs) help outdoors