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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Medusahead
Taeniatherum caput-medusae
 
Seedling

Leaf blades are about one-eighth inch wide.
Adult

Medusahead is an annual growing from six inches to two feet high. Flowering and seed production take place in late spring and early summer.
Seedhead

It is sometimes confused with foxtail barley or squirreltail, but is different in that the seedhead doesn't break apart completely as the seeds mature.
Weed Infestation

Medusahead was brought to the United States from Eurasia. It is extremely competitive completely displacing other desirable grass species. It spreads by seed commonly carried by wind, animals, clothing, and vehicles.
Twisted Awns

Awns of the seedhead are long and become twisted as the seed matures.
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