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Definition of witch grass in English: witch grassnoun mass nounA tough creeping grass that can become an invasive weed. couch grass. (also 'old witch grass') a North American grass (Panicum capillare, family Gramineae). Example sentencesExamples - When a visitor stands in the center of the trail and scans eastward across the tops of a myriad of purple meadow rue, old witch grass, big blue stem, and wild raspberries and plum, ‘natural history’ becomes visually literal.
- I've done two years of lasagne composting, followed by two layers of weed cloth, and then about six inches of wood chips - the witch grass keeps coming through with a vengeance.
- Witch grass is an annual grass native to North America that infests field crops, small grains, grasslands, and a variety of other habitats.
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