Nutsedges are common weeds in landscapes and gardens in the coastal valleys, Central Valley, and southern areas of California. They thrive in waterlogged soil and their presence often indicates that drainage is poor, irrigation is too frequent, or sprinklers are leaky. They are a problem in the lawn because they grow faster, have a more upright growth habit, and are lighter green in color than most grass species, resulting in a nonuniform turf. In gardens and landscapes, nutsedges will emerge through bark or rock mulches in shrub plantings and vegetable and flower beds throughout the growing season.
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