What's eating my geranium 'johnson's blue'?

Geranium 'Johnson's Blue' is a hardy perennial cranesbill with relatively few serious pest problems. Vine weevils are the biggest threat, eating notched leaf margins and destroying roots. Slugs and snails graze foliage in wet weather, and aphids occasionally cluster on soft new shoots. Rabbits may browse young growth in spring.

Notched scalloped bites on leaf edges from adults; grubs destroy roots causing sudden plant collapse Apply nematodes (Steinernema kraussei) to moist soil in late summer or early autumn; use vine weevil killer granules around crowns

Ragged holes in leaves and stems, worse on new spring growth and in wet conditions Apply slug pellets (ferric phosphate), use copper tape barriers around pots, or trap under damp boards and dispose

Clusters of soft-bodied insects on shoot tips causing distorted, sticky leaves with possible sooty mold Blast off with a strong jet of water; introduce ladybirds or lacewings; spray with insecticidal soap if infestation is heavy

Clean-cut stems and stripped foliage at ground level, especially on young plants in spring Surround plants with wire mesh guards or install rabbit-proof fencing around the border