What's eating my corn plant?

Corn Plant (Dracaena fragrans) is most often attacked by spider mites, which cause the characteristic silver-brown streaking on its long strap leaves. Scale and mealybugs are common on the thick canes. Thrips occasionally scar the foliage. The waxy leaves can look healthy until an infestation is well established, so inspect leaf undersides routinely.

Silver or bronze streaking and stippling along leaves; fine webbing at the leaf base and undersides Wipe leaves with a damp cloth, increase humidity, and apply neem oil or insecticidal soap weekly

Brown or tan bumps on canes and leaf undersides; sticky honeydew and sooty mould Scrape off manually; treat with horticultural oil spray; isolate the plant from others

White woolly clusters at leaf axils along the cane; yellowing and weakened growth Dab with isopropyl alcohol on a swab; follow with a thorough insecticidal soap spray

Silver streaks or scarring on leaf surfaces; tiny dark frass specks visible on close inspection Remove heavily affected leaves; spray with insecticidal soap or spinosad; use blue sticky traps