Persicaria bistorta 'Superba'
Pink Snakeweed flowers
(Photo courtesy of NetPS Plant Finder)
Height: 24 inches
Spacing: 20 inches
Hardiness Zone: 3a
Other Names: Knotweed, Polygonum
Pink Snakeweed has masses of beautiful spikes of hot pink flowers rising above the foliage from early to late summer, which are most effective when planted in groupings. The flowers are excellent for cutting. Its pointy leaves remain forest green in colour throughout the season. The fruit is not ornamentally significant.
Pink Snakeweed is an herbaceous perennial with a mounded form. Its medium texture blends into the garden, but can always be balanced by a couple of finer or coarser plants for an effective composition.
This plant will require occasional maintenance and upkeep, and is best cleaned up in early spring before it resumes active growth for the season. Gardeners should be aware of the following characteristic(s) that may warrant special consideration;
Pink Snakeweed is recommended for the following landscape applications;
Planting & Growing
Pink Snakeweed will grow to be about 20 inches tall at maturity, with a spread of 24 inches. When grown in masses or used as a bedding plant, individual plants should be spaced approximately 20 inches apart. Its foliage tends to remain dense right to the ground, not requiring facer plants in front. It grows at a fast rate, and under ideal conditions can be expected to live for approximately 10 years.
This plant does best in full sun to partial shade. It is quite adaptable, prefering to grow in average to wet conditions, and will even tolerate some standing water. It is not particular as to soil type or pH. It is highly tolerant of urban pollution and will even thrive in inner city environments. This is a selected variety of a species not originally from North America. It can be propagated by division; however, as a cultivated variety, be aware that it may be subject to certain restrictions or prohibitions on propagation.
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