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Knotweed

Persicaria Affinis 'Superba'

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Overview

Persicaria affinis 'Superba', also known as knotweed, is a robust, mat-forming perennial. It features dense spikes of tiny pink flowers that deepen to red, blooming from mid-summer to fall. With a height of 8-12 inches and a spread of 18-24 inches, its lush, elliptical leaves turn bronzy-green in fall. This low-maintenance ground cover thrives in Zones 4-9, preferring full sun to partial shade and moist, well-drained soil. Ideal for borders or slopes.

Sun Full, HalfWater Extra in Summer, MediumZones 4–7Type Ground cover, PerennialClimate Alpine

Knotweed (Persicaria Affinis 'Superba') — ground cover / perennial with pink and red blooms; pink flowers that gradually deepen to a rich crimson, image 104

Culture

Sun: Full, Half
Water: Extra in Summer, Medium
USDA zones: 4–7

Shape & size

Mature height: 0.5–1 Ft.
Mature width: 1–2 Ft.

Classification

Type: Ground cover, Perennial
Family: Liliaceae
Climate: Alpine

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Photos (116)

Knotweed (Persicaria Affinis 'Superba') — or as a stabilizing force on sloped terrains

Knotweed (Persicaria Affinis 'Superba') — One of the key features of the Knotweed is its dense clusters of tiny; elliptical leaves turn, image 52

Knotweed (Persicaria Affinis 'Superba') — These blossoms are perched atop short stalks that rise modestly above the foliage

Knotweed (Persicaria Affinis 'Superba') — ground cover / perennial for full or half; it is a delightful choice for gardeners looking for a, image 63

Knotweed (Persicaria Affinis 'Superba') — ground cover / perennial for full or half; it is a delightful choice for gardeners looking for a, image 105

Knotweed (Persicaria Affinis 'Superba') — With a height of 8-12 inches and a spread of 18-24 inches; it is a delightful choice for gardeners, image 87

Knotweed (Persicaria Affinis 'Superba') — spreading groundcover that adds an eclectic charm to any garden scape

Knotweed (Persicaria Affinis 'Superba') — These blossoms are perched atop short stalks that rise modestly above the foliage; it is a delightful, image 96

Knotweed (Persicaria Affinis 'Superba') — These blossoms are perched atop short stalks that rise modestly above the foliage; it is a delightful, image 75

Knotweed (Persicaria Affinis 'Superba') — Ideal for borders or slopes; elliptical leaves turn bronzy-green in fall, image 70

Knotweed (Persicaria Affinis 'Superba') — One of the key features of the Knotweed is its dense clusters of tiny; elliptical leaves turn, image 94

Knotweed (Persicaria Affinis 'Superba') — When integrating Knotweed into a design; it is a delightful choice for gardeners looking for a, image 57

Knotweed (Persicaria Affinis 'Superba') — pink and red flowers in the garden; elliptical leaves turn bronzy-green in fall

Knotweed (Persicaria Affinis 'Superba') — making it versatile across many climates; it is a delightful choice for gardeners looking for a, image 114

Knotweed (Persicaria Affinis 'Superba') — It is a delightful choice for gardeners looking for a groundcover that offers both beauty and practicality, image 39

Knotweed (Persicaria Affinis 'Superba') — One of the key features of the Knotweed is its dense clusters of tiny; elliptical leaves turn bronzy-green in fall

Knotweed (Persicaria Affinis 'Superba') — Ideal for borders or slopes; elliptical leaves turn bronzy-green in fall, image 49

Knotweed (Persicaria Affinis 'Superba') — pink flowers that gradually deepen to a rich crimson as summer progresses into fall

Knotweed (Persicaria Affinis 'Superba') — spreading groundcover that adds an eclectic charm to any garden scape; pink flowers that gradually deepen, image 50

Knotweed (Persicaria Affinis 'Superba') — pink and red flowers in the garden; elliptical leaves turn bronzy-green in fall, image 103

Knotweed (Persicaria Affinis 'Superba') — making it versatile across many climates; it is a delightful choice for gardeners looking for a groundcover that

Knotweed (Persicaria Affinis 'Superba') — pink flowers that gradually deepen to a rich crimson as summer progresses into fall, image 32

Knotweed (Persicaria Affinis 'Superba') — This autumnal color transition creates a multi-seasonal display that enriches the garden's aesthetic

Knotweed (Persicaria Affinis 'Superba') — consider using it for borders; elliptical leaves turn bronzy-green in fall, image 79

Photographs by 8 contributors

NY State IPM Program at Cornell…, CC BY 2.0 · source
Krzysztof Ziarnek, Kenraiz, CC BY-SA 4.0 · source
Forest and Kim Starr, CC BY 3.0 us · source
Sun Jiao (Interaccoonale), CC BY 4.0 · source
Salicyna, CC BY-SA 4.0 · source
Ayotte, Gilles, 1948-, CC BY-SA 4.0 · source
Andrey Zharkikh from Salt Lake City,…, CC BY 2.0 · source
Kevin Thiele from Perth, Australia, CC BY 2.0 · source

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