Chickweed Organic Weed Control

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Chickweed is an annual plant that competes vigorously with other plants. It is edible.

Chickweed (Stellaria media) is a low-growing annual or perennial herbaceous plant commonly found in lawns, gardens, and disturbed areas. It has small, star-shaped white flowers with five deeply notched petals, making it appear to have ten petals. Its leaves are oval, smooth, and grow in opposite pairs along slender, creeping stems that often root at the nodes. Chickweed thrives in cool, moist conditions and can spread quickly due to its ability to self-seed and establish in various soil types.

Chickweed is both useful and problematic. On the beneficial side, it is edible, with a mild, spinach-like flavor, and is often used in salads, soups, or as a cooked green. Chickweed is also valued in herbal medicine for its anti-inflammatory and soothing properties, often used in skin salves and teas. However, it can become a nuisance in gardens and lawns, as it competes with desired plants for nutrients and space.

To control and eliminate chickweed, maintaining a healthy, thick lawn or garden bed is key, as this prevents it from establishing. Hand-pulling chickweed is effective, especially before it sets seed, as its shallow roots make it easy to remove. Mulching garden beds can also suppress its growth by blocking light. In lawns, mowing regularly and addressing bare patches with reseeding can help prevent chickweed from spreading. If necessary, herbicides labeled for broadleaf weed control can be used as a last resort.

Botanical name: Stellaria media

Chickweed flowers
Chickweed flowers

Chickweed description and life cycle

  • Bright green, mat forming low grower with multiple branches from a central crown.
  • Stems 1½ to 3 feet long.
  • Leaves are oval and pointed at the tip, smooth and shiny, opposite in pairs on the stem.
  • White 1½ inch flowers with 5 split petals that look like 10 petals; blooms in spring.
  • Red-brown seeds with bumpy ridges; sets seed in fall.
  • Reproduces by seed and creeping and rooting stems.
  • Prefers rich soil; tolerates acid soil.
  • Chickweed ground cover will slow soil erosion.

Chickweed root system

Chickweed has a fibrous, shallow root system. Weeded debris including stem parts or roots left in the garden will re-root and generate new plants.

Chickweed organic control

  • Hand weed; pull up root and all; best done early in the season.
  • Remove all roots and plant parts from the garden; even small roots left behind can re-root.
  • Mulch with a layer of cardboard or newspaper with bark chips on top to kill plants.
  • Do not allow to spread and cover ground; competes vigorously with other plants.
  • Solarization using clear plastic mulch will heat the soil and kill seeds but also may kill beneficial soil microorganisms.

Chickweed range

Throughout the United States and southern Canada.

Four quick ways to control weeds

  1. Weed early. Control weeds in the first month after they germinate.
  2. Weed often. Hand weed every two weeks through the season.
  3. Weed by hand when the soil is wet (best to get roots).
  4. Use a hoe if the soil is dry. Decapitate weeds before they flower and drop seed.

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Written by Stephen Albert

Stephen Albert is a horticulturist, master gardener, and certified nurseryman who has taught at the University of California for more than 25 years. He holds graduate degrees from the University of California and the University of Iowa. His books include Vegetable Garden Grower’s Guide, Vegetable Garden Almanac & Planner, Tomato Grower’s Answer Book, and Kitchen Garden Grower’s Guide. His Vegetable Garden Grower’s Masterclass is available online. Harvesttotable.com has more than 10 million visitors each year.

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