The flower spikes open white but mature by degrees to a deep crimson, and the plant will carry flocks of them at all their stages. • Hauser & Wirth Somerset. RHS H7, USDA 4a-7b. Help Chosing Places for Growing Persicaria As moisture loving plants Persicaria are used in boggy areas or near water. RHS H7, USDA 5a-8b. Upwards of 50 species of annuals and perennials grow in a … RHS H7. 1.5m. By a happy accident, most of the pre-eminent horticultural species now reside in one genus, Persicaria, although this is by no means completely settled. But the best approach is to let them jostle with other big beasts of prairies, meadows and flower borders, such as Eupatorium maculatum and the aster Doellingeria umbellata, as well as anemones, Vernonia arkansana, Silphium perfoliatum and larger grasses such as Miscanthus sinensis, Molinia caerulea subsp. RHS H6. Pests and Diseases. The species covered here are found in a wide area emanating from the Himalayan region, while Persicaria virginiana is widespread throughout eastern North America. Growing Persicaria (Bisort, Knotweed) Latin Name Pronunciation: per-si-kar'-ee-ah Members of this genus are sometimes included in Polygonum (known to many gardeners through the unwelcome guest called Knotweed). The pronounced maroon chevrons on each leaf, contrast well with the pale-green background. Generally pest and disease free. Persicaria affinis 'Superba' is: Semi evergreen, Pale-pink, Crimson in Summer; Crimson, Pale-pink in Autumn, Flushed bronze in Autumn; Flushed bronze in Winter; Dark-green in All seasons, Sign up for your FREE ACCOUNT today or login to receive detailed monthly care instructions. 80cm-1m. Tel 01686 670342, claireaustinhardyplants.co.uk, • Dove Cottage Nursery, Shibden Hall Road, Halifax, West Yorkshire HX3 9XA. AGM. Most species are hardy to -20ºC with a hardiness rating of RHS H6 to H7, and are generally suitable for gardens within USDA zones 4a to 8b. In common with other cultivars of the species the flowers are a magnet for pollinating insects – bees throng to it in sufficient numbers to make quite a racket. P. affinis is a mat-forming herbaceous perennial about 25cm high with elliptic to lance-shaped dark green leaves, 5-15cm long, which turn red-bronze in autumn, and from midsummer to mid-autumn spikes 5-8cm long of flowers, each 5mm long, which open bright reddish pink, fade to pale pink, and then turn brown during winter; it is an excellent ground-cover plant Persicaria affinis 'Superba' (Knotweed 'Superba') will reach a height of 0.2m and a spread of 0.6m after 5-10 years. You'll also receive handy monthly email reminders of what needs doing. Height - 40cm. Remove faded flowers regularly to encourage more buds to form. Another cultivar from Belgian designer Chris Ghyselen. Partial Shade Soil Type. sort by. 80cm-1m. Most species are hardy to -20ºC with a hardiness rating of RHS H6 to H7, and are generally suitable for gardens within USDA zones 4a to 8b. Persicaria Blackfield. How to take care of Persicaria Superba. long (8 cm), densely packed with tiny, pale pink flowers that deepen to crimson as they mature. USDA 4a-8b. Soil drainage long (8 cm), densely packed with tiny flowers over a long season. Sometimes sold as Persicaria alpina. Grow Persicaria bistorta ‘Superba’ in moist but well-drained soil in full sun to partial shade. An impactful cultivar of dense, saturated colour, lacking the subtlety and airy grace of many others. The versatility of the species is highlighted by Piet Oudolf’s planting at the Hauser & Wirth gallery in Somerset. Persicaria amplexicaulis can be considered among the most floriferous of cultivated plants available to gardeners in temperate regions, and breeding has spawned a wide variety of cultivars in vivid shades of a spectrum between crimson and scarlet, although for the faint of heart there are also some white and soft pink-flowered cultivars. Position: Full sun to partial shade Flowering Time: Summer to Autumn Height and Spread: 10 … To check if this plant is suitable for your garden first login to your account or subscribe. Words Rory Dusoir, photographs Dianna Jazwinski. Pruning Persicaria. One of the large number of Persicaria amplexicaulis cultivars selected and named by  the Belgian landscape architect Chris Ghyselen. Further details for. Noteworthy Characteristics. Blooming for weeks from midsummer to mid-autumn, they open deep rose-red, fade to pale pink as the season progresses before turning brown in the fall. Cut back after flowering and divide congested clumps every three years. Sun Exposure. Persicaria is a versatile genus of perennials with late season, brightly coloured flower spikes on hearty green plants from July through to late October. This can be a considerable virtue if you are looking to cover a wide area with something attractive that will exclude even the most determined weeds; however, in the mixed border it can become a bit of a nuisance as the wiry stems gain considerable purchase on the soil with their roots, and are hard to extricate from neighbouring plants. 1.5m. Massed stems carry thick cyclamen-pink pokers, handsome dock-like foliage, which is semi-evergreen. Optimal Growing Conditions. The flowers are uniquely lustrous and in this cultivar fully suffused in soft pink. This selection by Dutch designer Piet Oudolf has extraordinarily vibrant colouring. Persicaria bistorta Superba. 1.2m. Plants are easily divided in early spring. Synonymous with and sometimes sold as Polygonum polymorphum. Suitable for the rock garden or along a ponds edge. Pot size: 2 Litre May 16, 2016 - Explore Shoot Limited's board "Persicaria", followed by 5741 people on Pinterest. Not a plant for full sun, The whole performance lasts from July to September. Grow in moist soil in sun or partial shade. Best in a moist soil. Create your free SHOOT garden and make a record of the plants in your garden. 3. Suggested uses. 'Superba' is a semi-evergreen perennial forming a wide mat to 20cm in height, with dark green, elliptic leaves and erect spikes of small pale pink flowers that deepen to crimson with age. Persicaria campanulata 'Madame Jigard' Lesser knotweed. Thanks for your patience. Lesser knotweed. We are here for you. 2. Persicariahardiness. bistorta superba amplexicaulis alba bistorta superba Colour - pink. 2. Complete your border. it appreciates ample moisture. We are here for you. Persicaria affinis. 1.2-1.5m. Divide mature herbaceous clumps in early autumn or late winter. Persicaria campanulata. Persicaria Red Dragon. Most of the species featured here will flower from July to September or October; some species have a late flourish of blooms in September but these may be considered primarily as foliage plants. In Stock. Most Persicaria have creeping stems and bottle brush flowers that form good ground cover. Are persicaria perfect plants for the modern garden? Requires no special attention. Cultivation. to your lists, login to your account or subscribe. Thin, spidery inflorescences appear in September. Get started now. The narrow blossoms are up to 4 inches long, and are held on long stalks above pointed, slightly puckered leaves. Persicaria bistorta ‘Superba’ at Digging Dog Mail Order Nursery. Suggested uses. All rights reserved. Great for cutting. RHS H7. Along with other members of the Polygonaceae family, they are commonly known as knotweed with the self-seeding Persicaria virginiana also known as jumpseed. account. Taking Care of Persicaria. Persicaria bistorta 'Superba' (Knotweed 'Superba') will reach a height of 0.75m and a spread of 1m after 5-10 years. Persicaria / Polygonum. Its late season, spanning four months of intense flowering effort from July to October, combined with its general hardiness, versatility and natural charm, has won it an important place in the plant catalogues of the New Perennial Movement as well as in more traditional gardening paradigms. Full Sun or. 1m. Perfect for using as ground cover, Persicaria affinis ‘Superba’ is ideal for growing at the front of a border in sun or partial shade. Sy16 4EN your plants, Prune, how to grow it and my favourite plants impactful of... Pleating between the veins but are surprisingly adaptable to poorer, drier conditions, bearing upright spikes of bottlebrush! Older cultivar of dense, saturated colour, lacking the subtlety and airy grace many! Suitable vigour Chatto Nursery, Elmstead Market, Colchester, Essex CO7 7DB slender are... 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