What's eating my houttuynia cordata?

Houttuynia cordata is a vigorous spreader and largely trouble-free, but aphids and vine weevils are realistic threats. Slugs damage young shoots in spring. Its peppery aromatic foliage deters many browsing animals, though rabbits occasionally sample it. The plant's rapid growth means it generally outpaces most pest damage without intervention.

Colonies on new shoot tips; sticky honeydew and minor leaf curl in heavy infestations Strong water jet to dislodge; insecticidal soap spray; natural predators usually keep populations in check once established

Adults notch leaf margins; larvae feed on roots in autumn and winter, causing sudden wilting and plant collapse Apply nematode drench (Steinernema kraussei) to moist soil in late summer–autumn; check compost when repotting; use vine weevil barrier adhesive on pot rims

Holes and ragged edges on young emerging spring growth before the aromatic oils fully develop Iron phosphate pellets; hand-pick at night; grit mulch around crowns; frogs are effective natural allies