Pest identification
What's eating my geranium x magnificum?
Vine weevil
Signs: Larval root feeding causes sudden wilting; adults leave characteristic scalloped notches on leaf edges
Control: Apply Steinernema kraussei nematode drench in late summer; remove grubs when dividing clumps; use biological control for container plants
Slugs and snails
Signs: Holes chewed in new basal leaves and flower stems, worst in spring and after rain
Control: Scatter iron phosphate pellets; mulch with sharp grit to deter slugs; hand-collect after dark
Aphids
Signs: Green or black colonies on young shoot tips cause curled leaves and sticky honeydew
Control: Spray with insecticidal soap or neem oil; allow natural predators to establish; remove heavily infested tips
Keep geranium x magnificum pest-free
Healthy plants resist pests best. Get the basics right:
Geranium x magnificum pests — FAQ
What is eating my geranium x magnificum?
Geranium × magnificum is a robust, clump-forming garden cranesbill widely used in borders. Its main pests are vine weevil grubs (especially in containers), slugs and snails on young spring foliage, and aphids on new shoots. Its aromatic leaves give it some deer resistance. Powdery mildew can follow late-season stress.
How do I get rid of vine weevil on geranium x magnificum?
Larval root feeding causes sudden wilting; adults leave characteristic scalloped notches on leaf edges Apply Steinernema kraussei nematode drench in late summer; remove grubs when dividing clumps; use biological control for container plants
How do I get rid of slugs and snails on geranium x magnificum?
Holes chewed in new basal leaves and flower stems, worst in spring and after rain Scatter iron phosphate pellets; mulch with sharp grit to deter slugs; hand-collect after dark
How do I get rid of aphids on geranium x magnificum?
Green or black colonies on young shoot tips cause curled leaves and sticky honeydew Spray with insecticidal soap or neem oil; allow natural predators to establish; remove heavily infested tips