Echinochloa crus-galli, commonly known as barnyardgrass, is one of the most widespread and competitive grass weeds in the world. It infests rice paddies, corn fields, sorghum, cotton, and vegetable...

Jowar, also known as sorghum, is a warm-season cereal crop grown across India, Africa, and parts of the Americas for grain, fodder, and forage. It competes poorly with weeds during the first three to...

Yellow star thistle is one of the most aggressive invasive broadleaf weeds in western North America, forming dense spiny stands that crowd out native grasses and forage on rangeland, roadsides, and...

Purple deadnettle is a winter annual broadleaf weed that emerges in fall, overwinters as a low rosette, and blooms in early spring with small purple flowers. It spreads rapidly through seeds and...

Green kyllinga is a warm-season perennial sedge that forms dense mats in lawns, sports fields, and golf courses across the southern United States. It spreads through underground rhizomes and produces...

Eurasian milfoil is a submerged aquatic weed that forms dense mats in lakes, ponds, rivers, and irrigation canals. It spreads through stem fragments that root in new areas, and it can dominate a...