Persicaria polymorpha (Knotweed; Giant Fleeceflower)

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• Large, bold, vase-shaped plants
• Shrub-sized perennial
• ​White blooms
• ​Use in groups in borders or naturalized areas
• Showy, large, white plumes
• Not an aggressive spreader
• Bloom time: summer
• ​4' H x 4' W