Nassella tenuissima (Mexican feathergrass) is a perennial grass (family Poaceae) that can grow to be 2 feet tall and is found in the central and south coast ranges of California. It is native to Mexico, Texas, Argentina and Chile. It favors grasslands and woodlands. It spreads only by seeds which are dispersed by livestock, humans, […]

Thinopyrum junceiforme (Russian wheatgrass) is a perennial grass (family Poaceae) that can grow to be 3 feet tall and is found in the San Francisco Bay area and south coast ranges of California. It is native to Europe and Russia. It grows in dunes, grasslands, alkaline areas and along roadsides. It spreads via seeds and […]

Ventenata dubia (North Africa grass) is an annual grass (family Poaceae) that can grow to be more than 1 foot tall and is found in the coastal and inland ranges of northern California. It is native to central and southern Europe. It occurs in grasslands. It reproduces via seed. The long awns attach to humans, […]

Verbena bonariensis (tall vervain) is a herb/ (family Verbenaceae) with purple flowers and narrow toothed leaves found in the Central Valley and the central and south coast ranges of California. It is native to South America. It favors grasslands and riparian and bottomland habitat. It readily self-seeds and is dispersed via animals, wind and water.

Zygophyllum fabago (Syrian beancaper) is a perennial herb/subshrub (family Zygophyllaceae) with white to orange flowers and oval shaped leaves found in the San Joaquin Valley, desert ranges and central coast ranges of California. It is native to the Mediterranean and central Asia. It favors grasslands and dunes. It spreads via seeds and root suckers. Agricultural […]

Carrichtera annua (Ward’s weed) is an annual herb (family Brassicaceae ) with white to yellow flowers and hairy lobed leaves found in the south coast ranges of California. It is native to the Mediterranean and southwestern Asia. It favors grasslands and scrub and chaparral habitat. It reproduces by seed only. Seeds are dispersed by foraging […]

Chrysanthemoides monilifera ssp. monilifera (boneseed) is a shrub (family Asteraceae) with yellow flowers and oval-shaped leaves found in the south coast ranges of California. It is native to southern Africa. It favors grasslands and scrub and chaparral habitat. It spreads by seeds which travel via water, machinery, birds and other animals.

Clematis vitalba (old man’s beard) is a vine (family Ranunculaceae) with white flowers and oval-shaped leaves found in the central coast ranges of California. It is native to the United Kingdom. It favors forests and woodlands. It spreads via seeds and roots. Means of dispersal include water, wind, humans and animals.

Colocasia esculenta (taro root) is a perennial herb (family Araceae) with yellow-orange flowers and large heart-shaped leaves found in the Central Valley of California. It is native to eastern Asia. It favors grasslands, wetlands, and bog and marsh habitat. It spreads via seeds and vegetative corms and is sometimes cultivated as a crop. Seeds are […]

Geranium purpureum (little robin) is a herb (family Geraniaceae) with pink flowers and lobed leaves found in the San Francisco Bay area and central coast ranges of California. It is native to Europe, northern Africa and western Asia. It favors grasslands and woodlands. It spreads via seeds which land within a short distance of the […]