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grassy weed identification seed head oregon

The noxious weeds (on federal and/or state level) on this list include field bindweed, quackgrass, Canada thistle, yellow nutsedge, and buckhorn plantain. There are other noxious weeds that aren’t on this list that are also problematic, such as Johnsongrass.

No. All parts of the bindweed plant are poisonous. Do not ingest.

10 Ways to Prevent Weeds Before They Become a Problem

We have divided this list of weeds into two sections: 1) Noxious and 2) Other common weeds that compete with vegetables, fruits, and crops but may have their own beneficial uses.

Crabgrass. Photo by R. Dyer,

Lambsquarters. Photo by Michigan State University.

Mollugo verticillatais a prostrate summer annual with smooth leaves that are light green in color and spoon-shaped. Leaves are arranged in whorls of five to six per node. Carpetweed flowers white, tiny, flowers arranged in clusters of two to five in mid-summer through early fall. It can be found throughout most of the United States.

Axonopus affinis is a mat-forming perennial that can be identified by its smooth leaf blades with rounded tips. Typically, a few long hairs are present on the leaf sheath at the base of the blade. Often found coexisting in centipede lawns. Carpetgrass is found in the Coastal Plain of the Gulf states including Florida, north to North Carolina and west to Arkansas and Oklahoma.

Clover Rabbitfoot

Plantago aristatais a winter annual with basal leaves that grow from a taproot. Bracted Plantain can be identified by its dark green, soft, hairy to smooth, long linear – grass-like – leaves. Bracted Plantain can be found in most southern states, north to Michigan, and west to Texas, California, the Pacific Northwest and Hawaii.

Know your Enemy!
Knowing what your weeds look like will help you to defeat them!

Facelis retusa is a winter annual with freely branched stems at teh base. Facelis leaves are narrow in shape with a dull green upper surface and a lower surface covered with white turfs of long hairs. Facelis can be found in Tennessee and North Carolina, and south into north Florida and west to Texas and Oklahoma.