What's eating my philodendron patriciae?

Philodendron patriciae's large, long leaves create ideal hiding spots for mealybugs, which colonize petiole bases and leaf axils. Spider mites and fungus gnats round out the main threats. Keep humidity high, check the undersides of leaves frequently, and treat early — established mealybug colonies are stubborn to eradicate.

Cottony white masses tucked at leaf bases and along petioles; honeydew stickiness; yellowing and distortion of new leaves Swab with isopropyl alcohol; drench soil and spray foliage with neem oil; repeat every 7 days for at least 3 rounds

Yellow stippling across the broad leaf face; webbing on undersides; rapid leaf decline in hot, dry conditions Mist leaves and raise humidity; apply neem oil or miticide to leaf undersides; isolate plant while treating

Larvae feed on root hairs in moist soil, causing wilting and slowed growth; adults are a nuisance flying around the plant Allow the top 2 inches of soil to dry between waterings; apply Bacillus thuringiensis var. israelensis (Bti) drench; use yellow sticky traps for adults