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How to Manage Pests

Identification: Weed Photo Gallery

Lovegrasses

Scientific name: Eragrostis spp. (Grass Family: Poaceae)

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Life stages of stinkgrass flower head collar mature plant spikelets

Lovegrasses are winter or summer annuals, or perennial grasses, depending on the species and location. At least twelve lovegrass species or subspecies occur in California and the western United States. Some species are called stinkgrasses and have tiny wartlike glands on their leaves and flower spikes, which give off an unpleasant odor. Lovegrasses inhabits agricultural lands and other disturbed sites.

Habitat

Agronomic and vegetable crop fields, gardens, orchards, nurseries, yards, irrigated pastures, and other disturbed locations.

Seedling

The first cotyledon (seedling leaf) is very narrow, light green, and inconspicuous. A seedling's second and third leaves are light green, short, and roughly 1/10 of an inch (2.5 mm) wide with tufts of hair arising from base of the third leaf.

Mature plant

Plants can grow upright, sprawling, or both, and range from a few inches wide or tall to over 6-1/2 feet (2 m), depending on the species and location. Sheaths are open and glands, when present, consist of tiny, slightly raised bumps with a pit in the center.

Collar region

Ligules have a fringe of straight hairs with a tuft of long hairs on either side of the collar. The protruding hairs on the sheath just below the collar (where the leaf base wraps around the stem), helps to distinguish mature lovegrasses from most other grasses. There are no auricles.

Flower

The flowering heads branch, are often gray-green, and consist of flowers clustered in spikelets. The spikelets are narrowly lance shaped or oblong and lack needlelike awns.

Fruit

The spikelets are narrowly lance shaped or oblong and lack needlelike awns.

Seeds

Numerous, tiny, egg shaped or lens-shaped seeds are produced.

Reproduction

Reproduce by seed.

More information


Statewide IPM Program, Agriculture and Natural Resources, University of California
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