What's eating my running tapestry tiarella?

Running Tapestry Tiarella (T. cordifolia) is generally pest-resistant but not pest-proof. Black vine weevil larvae are the most damaging threat, destroying roots and killing plants. Slugs nibble young foliage, especially in damp conditions. Foliar nematodes occasionally cause angular browning patches on leaves. Vine weevil management in late summer is the key protective step.

Adults notch leaf margins; larvae feed on roots and crowns underground, leading to sudden wilting and plant collapse with no visible above-ground warning Drench soil with pathogenic nematodes (Steinernema kraussei or Heterorhabditis megidis) in August–September; shake plants over card at dusk to collect adults; check crowns of wilting plants for white, C-shaped larvae

Holes and ragged edges on young, soft leaves, particularly in spring and after rain; silvery slime trails confirm activity Use iron phosphate slug pellets around clumps; set beer traps; hand-pick in the evening; avoid mulching too close to the crown with moist organic matter

Triangular or angular dead patches between leaf veins, starting yellow and turning brown; spreads plant-to-plant via water splash Remove and destroy affected foliage or entire plants; water at the base, not overhead; maintain good airflow; do not replant in the same spot