WEED GUIDE
How to identify and control ground ivy
Trailing stems root at nodes and form mats through beds and borders. Learn how to identify it, choose the right control method and prevent it returning.
13 sections
Identification
Rounded, scalloped leaves grow in opposite pairs on trailing stems that root at nodes. The square stems and blue-purple flowers distinguish it from unrelated low weeds; lifted rooted joints can establish again if left on damp soil.
Trailing stems root at nodes and form mats through beds and borders. Its main route of spread is creeping stems and seed. Check the crown and roots as well as the leaves: those features help distinguish a seedling that can be hoed from a plant that will need follow-up.
UK seasonality and timing
Clear during active growth in spring and summer.
Ground ivy persists as a perennial through creeping stems and seed. The foliage is easy to cut back, but roots must be weakened or removed and new shoots checked through the season.
Crops and plants affected
Ground ivy is not a crop parasite. It affects vegetables and flowers where it competes for space, light and water or obstructs access to beds. Trailing stems root at nodes and form mats through beds and borders. Give priority to seedlings, newly transplanted crops and plants sharing the same small bed; a separated patch is less urgent if it cannot spread into cultivated ground.
What damage does it cause?
Trailing stems root at nodes and form mats through beds and borders. The impact depends on how densely it grows and how close it is to a crop. A few plants outside the bed rarely justify disturbing a whole plot; growth among seedlings or over crop foliage is more likely to reduce establishment and make harvesting difficult.
For ground ivy, persistence comes from creeping stems and seed. Removing leaves without addressing that route clears the surface briefly but leaves the source of another flush in place.
Prevention
Lift rooted runners and remove fragments from the soil. Do this before the plant spreads further, and clean soil from tools before moving to an uninfested bed. Keep bed edges visible so new shoots or seedlings are spotted early.
Where ground ivy is too extensive to dig in one visit, exclude light with a secure cover; its creeping stems and seed means the edges need repeat checks.
Control and management
- Lift rooted runners and remove fragments from the soil.
- Suppress cleared patches with mulch and repeat checks.
- Clear during active growth in spring and summer.
Wildlife-friendly and soil-conscious control
For ground ivy, use a low-disturbance method suited to its growth: Lift rooted runners and remove fragments from the soil. Work only the affected patch, check before disturbing wildlife shelter and avoid salt, household vinegar or washing-up liquid, which can damage soil and nearby plants.
Suppress cleared patches with mulch and repeat checks.
Long-term management
Suppress cleared patches with mulch and repeat checks. Repeat inspections through active growth. Mark the edge of the patch and remove new shoots before they replenish the root system; do not assume one cleared visit has finished the job.
Common mistakes
Do not leave stem pieces on damp ground where they can root.
Keep rooted runners out of a cool heap.
If it keeps returning
If the same patch reappears, check below the point where the leaves emerge. For a perennial weed, the next useful step is suppress cleared patches with mulch and repeat checks. Repeat at the timing described above rather than repeatedly cutting the visible leaves alone.
If ground ivy appears in a neighbouring bed, trace whether the route is creeping stems and seed and contain that edge first. Avoid carrying contaminated roots or seed heads across the plot.
Frequently asked questions
Can a piece of ground-ivy stem root again?
Rounded, scalloped leaves grow in opposite pairs on trailing stems that root at nodes. The square stems and blue-purple flowers distinguish it from unrelated low weeds; lifted rooted joints can establish again if left on damp soil. Lift rooted runners and remove fragments from the soil. Expect to repeat the work as new shoots appear.
When should I tackle ground ivy?
Clear during active growth in spring and summer.
Can I compost ground ivy?
Keep rooted runners out of a cool heap.
Why can ground ivy keep coming back?
It spreads by creeping stems and seed. Small living root sections may produce fresh shoots, so check the patch again during active growth.
