Common Chickweed
Broadleaf annual weed
Common chickweed is a quick-growing, low annual that thrives whenever the soil is bare and moist. It can appear in every season, especially during mild spells, and readily carpets beds, pots and vegetable plots. Although easy to pull when young, its rapid seed production makes early attention worthwhile.
How to identify it
Look for soft, bright green stems that trail across the soil and form loose mats, usually 5 to 30 cm wide. The small oval leaves grow in opposite pairs and have pointed tips. A single line of fine hairs often runs along each stem. Tiny white flowers, generally 5 to 8 mm across, have deeply divided petals that can look like ten petals. It has shallow, fibrous roots and pulls readily from damp ground.
Where it grows
It occurs in cultivated borders, greenhouse beds, containers, paths and vegetable plots throughout the UK. Seeds germinate whenever conditions are cool and damp, so plants are often conspicuous from autumn to spring but can grow year-round in sheltered gardens. It favours fertile, recently disturbed soil and shaded or regularly watered places.
Why it is a problem
Dense mats smother seedlings and compete with crops and ornamentals for light, moisture and nutrients. Plants mature fast and can release seed over a long period, rapidly replenishing the soil seed bank. Their trailing stems also weave through low-growing plants, making a small patch harder to clear once established.
How to control it
Pull or hoe seedlings while they are small, ideally during a dry spell so disturbed plants dry out on the surface. Remove flowering plants carefully before they shed seed, and check again after rain or soil cultivation. Hand-weed around close-planted crops, lifting the shallow roots. Cover unused soil with mulch or a light-excluding cover to prevent germination. Keep paths and pot edges clear, as these often supply fresh seed for nearby beds.
Commonly confused with
It may be confused with mouse-ear chickweed, which has noticeably hairier, greyer leaves and stems. Common chickweed is also sometimes mistaken for scarlet pimpernel when young, but pimpernel has smoother, firmer leaves and later develops orange or red flowers.
Common Chickweed: frequently asked questions
How do I identify common chickweed?
Look for soft, bright green stems that trail across the soil and form loose mats, usually 5 to 30 cm wide.
How do I get rid of common chickweed?
Pull or hoe seedlings while they are small, ideally during a dry spell so disturbed plants dry out on the surface.
Where does common chickweed grow?
It occurs in cultivated borders, greenhouse beds, containers, paths and vegetable plots throughout the UK.
General guidance for UK gardens and allotments, focused on prevention and non-chemical control. For a confirmed identification, the RHS or a local garden centre can help. Page updated 18 Sep 2026.