Weed Library

Commonly known as hoary cress Whitetop is a perennial herb native to Eurasia and is an invasive species in North America, introduced by contaminated seeds

Commonly known as western goat’s-beard, wild oyster plant, yellow goat’s beard, goat’s beard, goatsbeard, common salsify, or salsify Western salsify is a perennial or biennial

Commonly known as wall speedwell, corn speedwell, common speedwell, rock speedwell, field speedwell The speedwell or Veronica family or plants consists of 500 different species.

Commonly known as pepper plant, case weed, pick-purse, St. James weed, mother’s heart, witches’-pouches, toothwart or shovel-plant. Shepherdspurse is a European plant that was introduced

Commonly known as common couch, twitch, quick grass, quitch grass (also just quitch), dog grass, or scutch grass. Quackgrass, introduced from Europe, has long been

Commonly known as goathead, bindii, bullhead, burra gokharu, bhakhdi, caltrop, small caltrops, cat’s-head, devil’s eyelashes, devil’s-thorn, devil’s-weed. One of the more commonly recognized invasive species