Northwest Blooms · Groundcovers
Persicaria capitata
Pink Knotweed

- Family
- Polygonaceae
- Height
- 4 to 20 inches
- Width
- 12 to 24 inches
- Flower color
- White to pink
- Foliage color
- Green with maroon V-shaped markings
- Bloom time
- Early to late summer
- Light
- Full sun to partial shade
- Water
- Moderate; prefers well-drained soil
- Maintenance
- Low; may require containment to prevent spreading
- Growing zone
- USDA zones 7 to 10
- Wildlife
- Attracts bees and butterflies
About this plant
Persicaria capitata is a perennial herb native to regions spanning the Indian Subcontinent, Southeast Asia, and parts of China. It blooms from early to late summer, producing small, spherical flower heads that range from white to pink in color. These flowers appear in dense clusters, adding a soft, rounded texture to the plant. The plant's spreading habit allows it to form a dense groundcover that is both attractive and resilient.
With prostrate stems that root at the nodes, Persicaria capitata establishes a strong presence in the landscape. Its leaves feature occasional red to pink markings, contributing to its ornamental appeal, and thrives in diverse environments, from cultivated gardens to more naturalized settings. Although it is admired for its groundcover capabilities, it can be invasive in some areas.
Works well in
Cottage Gardens · Borders · Pollinator Gardens · Slopes & Banks
Companion plants
Aubrietas · Potentillas · Catmints · Blanket flowers · Candytuft · Lavender
Design tip
Use this spreading groundcover to soften the front of sunny borders or stabilize gentle slopes with colorful foliage and flowers. Surround it with upright perennials, graceful grasses, and flowering shrubs to create contrast, texture, and a natural flowing composition.
