Bermudagrass

Johnsongrass

Medusahead

Quackgrass

Field Bindweed

Sufur Cinquefoil

Hoary Cress

Oxeye Daisy

Poison Hemlock

Black Henbane

Houndstongue

St. Johnswort

Diffuse Knapweed

Russian Knapweed

Spotted Knapweed

Squarrose Knapweed

Purple Loosestrife

Perennial Pepperweed

Saltcedar

Leafy Spurge

Yellow Starthistle

Canada Thistle

Musk Thistle

Scotch Thistle

Dalmatian Toadflax

Yellow Toadflax

Dyer's Woad

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Quackgrass
Elytrigia repens
 
Adult

This perennial grass usually grows one to three feet tall.
Seedhead

Seedheads are three to four inches long and narrow.
Seed
Weed Infestation

Originally found in the Mediterranean area, quackgrass infests crops, rangeland, pasture, and lawns. It adapts well to moist soils in cool temperate climates. It reproduces by seed and rhizomes. These rhizomes can penetrate hardened soils and even roots of other plants.
Leaf Tip

Leaf blades are up to a half inch wide. Near the tip of the leaves a band-like constriction may be present.
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