IPMP3.0, Oregon State University, Copyright 2000

Biology and Management of Common Chickweed


Registered Herbicides

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Common Chickweed 

General Description:

  • slender, tender prostrate stems with numerous branches.
  • branches have fine hairs arranged in rows.
  • leaves are opposite and about 1/2 inch long.
  • leaves at terminal end of branch do not have petioles.
  • small white flowers with 5 deeply notched petals that are shorter than sepals.
  • shallow fibrous root system.

Life cycle: annual

  • reproduces by seed and rooting at nodes on prostrate stems.
  • fruit contains many seeds within a dry capsule.
  • seeds germinate in early spring and late summer.
  • may produce one or two generations within one year.
  • flowers early spring to fall.

Habitat/ Crops associated with:

  • prefers shady, cool, and moist environments.
  • found in turfgrass, nursery crops, cultivated horticultural and agronomic crops.

Herbicide Control Notes:

  • Karmex/Direx or Sinbar are effective. Add Gramoxone if chickweed is well established.