What's eating my geranium phaeum?

Geranium phaeum (dusky cranesbill) thrives in shade and damp conditions, which unfortunately suit slugs and snails very well — these are its worst enemies. Vine weevil also attacks roots, especially in shadier, moist border positions. Aphids and sawfly larvae can cause minor foliage damage on occasion.

Large, ragged holes in leaves and eaten-back stems, often severe in shaded damp borders where this plant is typically grown Ferric phosphate pellets spread around plants; nematode drenches (Phasmarhabditis hermaphrodita) in warm soil; hand-pick at dusk

Notched leaf margins; larvae damage roots and crowns causing wilting, particularly in moist shaded positions Apply Steinernema kraussei nematodes to moist soil in late summer or early autumn; physically remove adults found at night

Soft colonies on new shoot tips causing sticky residue and mild distortion; rarely debilitating Jet of water to dislodge; insecticidal soap spray if persistent; encourage natural predators