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DESCRIPTION:
Quackgrass, a perennial, is a pest in California's northern and coastal
counties. Found abundantly in mountain meadows, it thrives on different
soil types, in gravel and peat, and also under saline and alkaline
conditions. Rhizomes can penetrate hard soils and potato tubers and are
easily spread when chopped up. Occurring mostly in the upper 6 inches (15
cm) of soil, rhizomes may reach a depth of 8 inches (20 cm) and spread
laterally 3 to 5 feet (0.9 - 1.5 m). Glaucous leaf blades have a pair of
auricles at the base of each leaf blade. Leaves are often constricted near
the tips. Seeds are formed in flattened spikelets. Cultivation and
herbicide applications may need to be repeated to eliminate quackgrass
problems. Avoid spreading or reintroducing quackgrass on contaminated
equipment or in irrigation water.
Grass ID illustration.
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