Fat heads of white flowers over a long period May-Aug followed by pink-cream seed heads, pleated(ish) foliage, 1-2m. Easy, not invasive for me. Synonym P.polymorpha. The seed heads pick well and last in water.

Genus: PERSICARIA
Variety: ALPINA
Cultivar:
Plant family: Polygonaceae
Hardiness zone: H7 (below -20C)
Height: 101-200cm.

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Plant ID 4982