What's eating my geranium x oxonianum 'wargrave pink'?

Geranium x oxonianum 'Wargrave Pink' faces the same pest pressures as the species: vine weevil grubs underground, slugs and snails on foliage, and aphids on spring shoots. It is vigorous enough to outgrow moderate slug damage. Vine weevil is the most serious threat, causing whole-plant collapse if left untreated.

Root-feeding grubs cause plants to wilt and die; adult beetles leave scalloped notches in leaves. Nematode soil drench (Heterorhabditis bacteriophora) in late summer; inspect roots when lifting or dividing.

Ragged holes in leaves and flower stems; worst damage in wet or shaded areas. Ferric phosphate pellets or wool pellets around plants; hand-pick at dusk; improve drainage.

Sticky shoot tips with distorted leaves; green or black aphid clusters visible in spring. Blast with water or apply insecticidal soap; encourage beneficial insects such as ladybirds.