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Persicaria bistorta ‘Superba’ (photo courtesy of Susan A. Roth)
Persicaria bistorta ‘Superba’ (photo courtesy of Susan A. Roth)

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Zone
Zones 2-9, 14-24
Full SunPartial Sun
Full, Partial
Regular Water
Moderate

Persicaria bistorta

Knotweed
Polygonaceae
Perennials, Flowers

PERSICARIA

Sturdy easy-to-grow plants with handsome leaves and showy white or pink flowers. Some kinds tend to get out of hand and need to be controlled.

Persicaria bistorta

Native to Eurasia. Makes a clump to 2 1/2 ft. high and 3 ft. wide, with large leaves. Tight, 2–3-in. spikes of pale pink or white flowers bloom from late spring until well into summer. ‘Superba’ is a good pink selection.

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