IPM Checklist
Ground Elder: Identification and Control
The short answer
Ground elder (Aegopodium podagraria) is a fast-growing, invasive perennial weed that spreads by rhizomes (underground stems) to form a dense carpet of foliage. The catch is that it regrows from even a tiny fragment of root left in the soil, so chopping it up by hoeing, digging or rotavating tends to spread it rather than remove it.
The most reliable approach is to weaken it without breaking up the roots. Cover infested ground to block light for a few years so the root system starves, plant densely with low evergreen shrubs to suppress it, and mow where it appears in a lawn. Where you must clear it from beds, painstakingly fork out every piece of rhizome. Control takes persistence over several seasons. This weed belongs to the same deep-rooted perennial family as bindweed and horsetail.
How to recognise ground elder
Ground elder forms low, spreading carpets of light green leaves divided into toothed leaflets, and in early summer produces flat white umbrella-shaped flower heads. It spreads mainly by white rhizomes just below the surface, which is why a small patch can quickly colonise a border.
- Spreading carpet of divided, toothed green leaflets
- Flat white umbels of flowers in early summer
- Regenerates from tiny fragments of white rhizome left in the soil
Control without spreading it
- 1Avoid chopping the roots — Practise no-dig where it grows and avoid hoeing, digging or rotavating, because ground elder regrows from every root fragment you cut.
- 2Block the light — Cover the soil to exclude light and keep it covered for a few years, topping up the mulch layer as needed, so the root system dies back.
- 3Out-compete it — Plant densely with low-growing evergreen shrubs to weaken the ground elder growing beneath, and mow it out where it invades a lawn.
- 4Fork out carefully — If you must clear a bed by hand, lift and remove every piece of rhizome you can find; leaving fragments restarts the problem.
Set realistic expectations
Because the roots are so extensive and regrow so readily, ground elder is a multi-season project. Even chemical control needs numerous applications to tackle established plants. Consistency is what wins. For the wider group of underground-spreading weeds and non-chemical tactics, see our guide on controlling deep-rooted perennial weeds without chemicals.
✔ If ground elder has grown up through a prized perennial, it is often easiest to lift the plant in autumn, wash all soil off the roots, tease out every fragment of ground elder rhizome, then replant into clean ground.
Sources
Reviewed 2026-07-18. We cite university Extension, government, and established horticultural sources — and never invent pesticide rates or dangerous treatments.
- RHS — Ground elder — Fast-growing invasive perennial spreading by rhizomes that regenerate from a tiny fragment; practise no-dig and avoid hoeing, digging or rotavating; block light and keep soil covered for a few years; plant densely with low evergreen shrubs; regular mowing weakens it in lawns; chemical control needs numerous applications on established plants.