What's eating my athyrium niponicum 'ursula's red'?

Athyrium niponicum 'Ursula's Red', like other Japanese painted fern cultivars, is most commonly damaged by slugs on its elegant fronds in cool, wet gardens. Aphids target soft new growth, and vine weevil grubs can devastate roots in pots. Deer may graze fronds during winter food shortages.

Holes and tattered edges on young fronds, particularly on emerging croziers in spring Ferric phosphate pellets, beer traps, and removing hiding spots such as dense mulch against crowns

Clusters on new growth causing distortion; honeydew leads to sooty mold Strong water spray to dislodge; insecticidal soap; attract hoverflies with nearby flowering plants

Notched frond margins from adults; root-eating larvae cause sudden wilting and plant collapse Nematode soil drench (Steinernema kraussei) in late summer; check rootball when repotting