Knotweed Pink Punching Balls Polygonum Capitatum is a perennial native to China. Knotweed Pink seeds can be started indoors 8-10 weeks before last frost, and also know as Persicaria Capitata, Pinkhead Smartweed, Pink Clover, and Pink Fleece Flower, this low-growing, spreading plant features burgundy tinted foliage with lance-shaped leaves blooming all season long with small coral-pink, globe-shaped flowers.
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