Pest identification
What's eating my persicaria amplexicaulis 'alba'?
Slugs and snails
Signs: Ragged holes or entire leaves eaten on young growth; damage most obvious as plants emerge in spring.
Control: Apply ferric phosphate pellets around emerging crowns in early spring. Use beer traps or copper barriers for pots. Collect slugs by torchlight on wet evenings.
Aphids
Signs: Occasional colonies on soft shoot tips causing mild distortion; rarely severe on established plants.
Control: A jet of water usually suffices. Insecticidal soap if colonies persist. Ladybirds and lacewings provide natural control when predator habitat is nearby.
Japanese beetle (Popillia japonica)
Signs: Skeletonised foliage with only veins remaining; most relevant in eastern and midwestern USA during midsummer.
Control: Hand-pick adults into soapy water early morning. Avoid pheromone traps close to the plant. Neem oil as a deterrent spray; beneficial nematodes target larvae in soil.
Keep persicaria amplexicaulis 'alba' pest-free
Healthy plants resist pests best. Get the basics right:
Persicaria amplexicaulis 'Alba' pests — FAQ
What is eating my persicaria amplexicaulis 'alba'?
Persicaria amplexicaulis 'Alba' is notably pest-resistant and deer- and rabbit-tolerant. Slugs are the most realistic concern, especially on emerging spring foliage. Aphids may appear but rarely cause serious harm. Japanese beetles can be an issue in North America. Overall one of the most trouble-free border perennials you can grow.
How do I get rid of slugs and snails on persicaria amplexicaulis 'alba'?
Ragged holes or entire leaves eaten on young growth; damage most obvious as plants emerge in spring. Apply ferric phosphate pellets around emerging crowns in early spring. Use beer traps or copper barriers for pots. Collect slugs by torchlight on wet evenings.
How do I get rid of aphids on persicaria amplexicaulis 'alba'?
Occasional colonies on soft shoot tips causing mild distortion; rarely severe on established plants. A jet of water usually suffices. Insecticidal soap if colonies persist. Ladybirds and lacewings provide natural control when predator habitat is nearby.
How do I get rid of japanese beetle (popillia japonica) on persicaria amplexicaulis 'alba'?
Skeletonised foliage with only veins remaining; most relevant in eastern and midwestern USA during midsummer. Hand-pick adults into soapy water early morning. Avoid pheromone traps close to the plant. Neem oil as a deterrent spray; beneficial nematodes target larvae in soil.