What's eating my arisaema jacquemontii?

Arisaema jacquemontii, a Himalayan woodland jack-in-the-pulpit grown outdoors, faces slugs and snails as its primary threat — they shred emerging foliage in spring. Vine weevil grubs attack the corm underground. Aphids occasionally colonize tender new growth. Deer and rabbits may browse the foliage where present.

Irregular ragged holes or entire loss of emerging leaves and spathe; silvery slime trails on soil and foliage Apply iron phosphate slug pellets around emerging shoots in spring; set beer traps; use copper tape barriers around pots; hand-pick at night

Larvae notch and tunnel into the corm, causing sudden wilt and plant collapse; adults leave scalloped leaf margins Apply beneficial nematodes (Steinernema kraussei) to moist soil in late summer; use imidacloprid drench in containers; inspect and destroy white grubs when repotting

Soft clusters on tender new stems and leaf undersides; distorted growth and sticky honeydew Knock off with a water blast; apply insecticidal soap spray; encourage beneficial insects such as ladybirds and lacewings