Dallisgrass, Paspalum dilatatum, is a perennial grass that is found throughout California except at high elevations. It has been used as a pasture grass in wet areas or irrigated sites but is primarily a weed in turfgrass, wet roadside areas, irrigation ditchbanks, and in some orchards and vineyards. Dallisgrass creates an unsightly clump in turfgrass that can be a problem in golf courses, sports playing fields, and home landscapes. The stiff clump it forms is different in texture from the other grasses in a turfgrass mixture and can present a hazard in sports fields, causing people to fall.
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