Persicaria bistorta 'Superba' syn. Polygonum bistorta 'Superbum'
Red Bistort 'Superba'
Persicaria are commonly known as knotweeds or smartweeds. Flowers in shades of pink or white appear late in the season on these hardy, herbaceous perennials. They are easy to grow and ideal for boerders or as ground cover. The best flower and leaf colour is achieved when grown in full sun. Superba is a fast growing plant that is semi-evergreen. The flower spikes produce tightly packed bell shaped flowers in pale pink and white looking like a bottle brush in shape.
Contributed by @richard.spicer.7906
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Full sun to partial shade
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Occasional watering
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Full Frost Hardy: 5F (-15°C)
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Moist and free draining
Common name
Red Bistort 'Superba'
Latin name
Persicaria bistorta 'Superba' syn. Polygonum bistorta 'Superbum'
type
Herbaceous Perennials
family
Polygonaceae
ph
5.0 - 8.5 Acid - Neutral
Plant & bloom calendar
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Best time to plant
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When the plant will bloom
full grown dimensions
Persicaria bistorta 'Superba' syn. Polygonum bistorta 'Superbum'
Persicaria are commonly known as knotweeds or smartweeds. Flowers in shades of pink or white appear late in the season on these hardy, herbaceous perennials. They are easy to grow and ideal for boerders or as ground cover. The best flower and leaf colour is achieved when grown in full sun. Superba is a fast growing plant that is semi-evergreen. The flower spikes produce tightly packed bell shaped flowers in pale pink and white looking like a bottle brush in shape.
Flowering
From Mid Summer TO Late Autumn
Most species of Persicaria are in flower through the summer months between mid summer and late autumn.
Planting Outdoors
From Early Spring TO Mid Spring
Put pot grown plants into the garden in full sunny or partially shaded site. They prefer a moist and fertile site if placed in a drier position they will need watering through hot periods.
Propagation by Division
From Late Autumn TO Late Autumn
Propagate by division. Dig up and replant healthy sections every 2 or 3 years to keep in check and avoid the centres of clumps dying out.
Planting Outdoors spring
From Early Spring TO Mid Spring
Plant out in the garden in full sun or partial shade. Whilst they prefer moist soil most will tolerate dry conditions but won't spread so much.
Planting Outdoors autumn
From Mid Autumn TO Late Autumn
Plant out in the garden in full sun or partial shade. Whilst they prefer moist soil most will tolerate dry conditions but won't spread so much.