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Eradicating Bishop’s Weed (Goutweed) in Perennial Beds

Relocate Desired Plants, Then Solarize

Goutweed is extremely invasive. Dig up all desirable perennials, carefully removing goutweed roots. Spray remaining area with glyphosate, then cover with black 2-mil plastic for 4–6 weeks (solarization). Replant clean perennials. Persistence is key—any root fragment regrows.

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