What's eating my pilea libanensis?

Pilea libanensis (Silver Sparkle Pilea) is a trailing, fine-leaved houseplant most threatened by spider mites, which thrive in the warm, dry indoor air it is often grown in. Mealybugs hide in dense trailing stems. Fungus gnats can breed in moist soil beneath its low, spreading canopy.

Tiny pale speckles across the small silver-green leaves; webbing along trailing stems; leaves drop. Mist plant to raise humidity; spray with insecticidal soap or neem oil every 7 days for 3 weeks; ensure good airflow.

White cottony residue along stems and at leaf nodes; sticky honeydew; slowed trailing growth. Treat visible colonies with an alcohol swab; apply neem oil spray; trim and dispose of heavily infested stems.

Adult gnats around the pot; root damage causing wilting and yellowing of trailing growth. Let soil dry between waterings; use yellow sticky traps; apply Bti drench to soil.