What's eating my string of hearts 'silver glory'?

String of Hearts 'Silver Glory' (Ceropegia woodii 'Silver Glory') is a trailing succulent houseplant. Mealybugs are the single most damaging pest, hiding in the stem joints and among the heart-shaped leaves. Spider mites attack in dry conditions, and vine weevil larvae can attack the tuberous roots if the plant is grown in a mixed-media pot.

White waxy cotton-like clusters at stem nodes, leaf undersides, and soil line; sticky honeydew; yellowing and leaf drop Dab with a cotton swab dipped in 70% isopropyl alcohol; spray with insecticidal soap; isolate the plant; repeat weekly for a month

Fine speckling and webbing on leaf undersides; leaves turn pale or bronzed; trailing stems look dull Increase humidity around the plant; apply neem oil or insecticidal soap spray; repeat every 5–7 days for three treatments

Irregular notches chewed from leaf edges (adults at night); sudden wilting caused by larvae eating the tubers and roots Check roots when repotting; apply nematode drench (Steinernema kraussei) in spring and autumn; use a gritty, well-drained mix to deter egg-laying adults