What's eating my arisaema consanguineum?

Arisaema consanguineum (Chinese cobra lily) is a woodland garden plant most vulnerable to slugs and snails damaging its dramatic striped spathe and palmate leaves as they emerge in late spring. Vine weevil grubs threaten the corm. Aphids and mice (which eat the corm) are secondary concerns.

Holes and scalloped edges eaten into the spathe and young leaves, often destroying the ornamental display before it unfurls fully Apply ferric phosphate slug pellets around emerging growth each spring; use a grit or sharp-bark mulch barrier; hand-pick at dusk

Larvae hollow out or consume the fleshy corm underground, leading to plant failure; adults leave notched leaf margins Drench soil with Steinernema kraussei nematodes in late summer; check corms at lifting time and crush any white grubs

Excavate and eat the corm over winter or early spring, leaving no trace of the plant Cover dormant corms with a layer of grit or fine mesh; use mouse traps near known runways; lift and store corms in frost-prone areas