Persicaria capitata
Knotweed
Polygonaceae
Evergreen, Ground covers, Perennials
PERSICARIASturdy plants with jointed stems and small white or pink flowers. Some kinds tend to get out of hand and need to be controlled.
Persicaria capitataHimalayan native. Tough, trailing ground cover 3–6 in. high; spreads indefinitely both by rooting stems and by self-seeding. Oval, 1 1/2-in.- long leaves are dark green when new, take on pinkish overtones when mature. Leaves of all ages have a bronzy cast that deepens in cooler weather; they discolor and die below 28°F/–2°C. Stems and small, round flower heads are pink. Blooms almost all year in mild climates. Best in confined spots (where it won’t be able to spread) or in uncultivated areas. No irrigation needed.
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