Weeds Identification Gallery

Corn Spurry

  • Spergula arvensis
  • Pink Family: Caryophyllaceae
Updated: 01/2026

Corn spurry is a summer or winter annual broadleaf plant. It is more common in coastal regions. In California is found on the North Coast, in the San Francisco Bay region, Central Coast, Central Valley, western South Coast Ranges, South Coast, and possibly in other areas, to about 2400 feet (730 m). It inhabits agricultural land and other disturbed locations. Leaves may contain compounds called oxalates, which can be toxic to livestock if consumed in quantity. Corn spurry seeds can survive for many years when buried in soil.

Habitat

Disturbed areas, roadsides, crop fields, orchards, vineyards, gardens, landscaped areas, sand dunes, and coniferous woodland.

Overall plant shape is outward and slightly upward (not flat). The plant is growing on sandy soil. Copyright information is at the bottom (Copyright 2007 The Regents of the University of California. All rights reserved.). Credit: Joseph M. DiTomaso, UC Agriculture and Natural Resources
Spreading habit. Credit: Joseph M. DiTomaso, UC Agriculture and Natural Resources

Seedling

Seedlings are slightly fleshy. The cotyledons (seed leaves) are linear, about 2/5 of an inch (1 cm) long, fuse at their base and have a rounded tip. The first few leaves are linear, about 2/5 to 4/5 of an inch (1–2 cm) long, hairless or have short glandular hairs, and are opposite to one another along the stem. Although they resemble the first leaves, later leaves are longer and are in a whorl around the stem at the stem joints (nodes).

Seedling with long, thin, upright, blade-shaped leaves. Copyright information is at the bottom (Copyright 2007 The Regents of the University of California. All rights reserved.). Credit: Clyde L. Elmore
Seedling. Credit: Clyde L. Elmore

Mature Plant

Corn spurry grows to about 20 inches (50 cm) long in an upright or spreading form and it mostly branches at the base. Its leaves are narrow, slightly fleshy, flexible, and hairless or have short glandular hairs, and sometimes is sticky to the touch. Leaves are stalkless and are arranged in whorls around the stem at the stem joints (nodes).

mature plant with unopened flowers showing leaf shape Monterey Co.; Credit: Jack Kelly Clark, UC IPM
Mature plant. Credit: Jack Kelly Clark, UC IPM

Flowers

Flowering takes place from February through October. Small, five-petaled, white flowers on long, slender stalks cluster at the end of the flowering stem.

Corn spurry flowering stem. Credit: Joseph M. DiTomaso, UC Agriculture and Natural Resources
Flowering stem. Credit: Joseph M. DiTomaso, UC Agriculture and Natural Resources

Fruits

Fruits consists of smooth, egg-shaped capsules that are usually about 1/6 to 1/4 of an inch (4–6 mm) long.

Seeds

Seeds are tiny, 1/25 to 1/12 of an inch (1–2 mm) in diameter, dull gray to black, and circular to oval lens shaped.

Twelve black seeds are round and smooth. A 1 mm bar shows the seeds to be about 1 mm in diameter. Copyright information is at the bottom (Copyright 2007 The Regents of the University of California. All rights reserved.). Credit: James A. O'Brien, University of California
Seeds. Credit: James A. O'Brien, University of California

Reproduction

Reproduces by seed.

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