Hardy perennial for zones 3–8. Do not harvest stalks at all in year 1; harvest lightly in year 2. From year 3, harvest by pulling/twisting stalks rather than cutting, and leave at least 2/3 of the plant's stalks. Caution: leaves are toxic (high oxalic acid) — harvest stalks only. Needs winter cold for dormancy; does not thrive in warm climates. Divide crowns every 5–8 years. Mulch generously in winter.

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