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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 plants with jointed stems and small white or pink flowers. Some kinds tend to get out of hand and need to be controlled.

Persicaria bistorta

Native to Eurasia. Makes aclump to 2 1/2 ft. high and 3 ft.wide, with large leaves. Tight,2–3-in. spikes of pale pink orwhite flowers bloom from latespring until well into summer.‘Superba’ is a good pinkselection.

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