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 Starthsitle Canada Thistle Musk Thistle Scotch Thistle Dalmatian Toadflax Yellow Toadflax Dyer's Woad Back to main weeds page   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. Back to main weeds page   Buffalobur CommonBurdock Camelthorn Goatsrue Jointed Goatgrass Blue-Flowering Lettuce Western Whorled Milkweed Silverleaf Nightshade Yellow Nutsedge Puncturevine Russian-Olive Bull Thistle Velvetleaf