Cerastium arvense (Field Chickweed)
|Also known as:|
|Habitat:||sun; prairies, roadsides, shores, rock outcrops|
|Bloom season:||May - July|
|Plant height:||6 to 12 inches|
|Wetland Indicator Status:||GP: FACU MW: FACU NCNE: FACU|
|MN county distribution (click map to enlarge):|
|National distribution (click map to enlarge):|
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Open cluster of 1 to 20 flowers on finely hairy stalks. Flowers are large and conspicuous compared to other chickweeds, about ½ inch across, the 5 white petals deeply notched into 2 rounded lobes with grayish streaks and yellowish at the throat. In the center are 10 stamens and 5 styles on the ovary. The 5 narrow lance-like sepals are 1/3 to half as long as the petals.
Leaves and stems:
Leaves are opposite, lance-linear but sometimes more oval, ¾ to 2¾ inches long and 1/8 to ½ inch wide, toothless and stalkless, the lower leaves often with tufts of smaller leaves in the axils. Stems often matted at the base with one or more upright stems terminating in an open flower cluster. Surfaces of stems and leaves can be smooth but more often densely covered with fine short hairs, often glandular especially in the upper plant.
Two subspecies of Cerastium arvense are found in Minnesota that look nearly identical. Subspecies strictum is native and is characterized by: a taproot or short rhizomes that form a clump of stems rarely over 8 inches tall, glandular hairs, and petals that stay white when dried. The other subspecies is arvense, a non-native that is strongly rhizomatous (spreading underground stems), with stems up to 12 inches long, the absence of glandular hairs except in the flower cluster, and petals that turn brown when dried.
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Where to buy native seed and plants ↓
- Field Chickweed plants
- a clump of Field Chickweed
- Field Chickweed habitat
- more plants
- Cerastium arvense subspecies arvense, in a lawn in Duluth
Photos courtesy Peter M. Dziuk taken in Douglas, Lac Qui Parle, Stearns and St. Louis counties.
Have you seen this plant in Minnesota, or have any other comments about it?