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Persicaria amplexicaulis ‘Atrosanguinea’ (Mountain Fleece)

Mountain Fleece 'Atrosanguinea', Knotweed 'Atrosanguinea', Bistort 'Atrosanguinea', Polygonum Amplexicaule 'Atrosanguinea'

Persicaria amplexicaulis 'Atrosanguinea', Mountain Fleece 'Atrosanguinea', Knotweed 'Atrosanguinea', Bistort 'Atrosanguinea', Polygonum Amplexicaule 'Atrosanguinea', Fall perennial, Summer Perennial

Tough and robust, Persicaria amplexicaulis ‘Atrosanguinea’ is an eye-catching border beauty. Vigorous, this upright perennial enjoys an extremely long bloom season, from midsummer to fall, and features cheerful, bright rosy-red fleecy flower spikes held on long, graceful wands atop bushy clumps of broad, mid-green leaves.

  • Typically growing up to 3-4 ft. tall and wide (90-120 cm), it thrives in average, medium to wet soils in full sun to part shade. Best flowering occurs in full sun. However, light shade will be appreciated in hot and humid summer areas.
  • Trouble-free and easy care, this is a welcomed addition to beds and borders, where Persicaria amplexicaulis provides long summer-to-fall bloom in the perennial border. This is also an ideal candidate for bog gardens, along ponds and streams or in naturalistic meadows. Excellent as a tall groundcover when planted en masse. Underplant it with spring-blooming bulbs for color prior to the lush spring growth.
  • Attracts birds and butterflies, but deer and rabbits ignore it!
  • Shear plants in the fall if desired to remove spent flowers.
  • All plant parts may cause skin irritation on contact and stomach upset if ingested.

Requirements

Hardiness 4 - 8
Heat Zones 1 - 8
Climate Zones 2, 2B, 3, 3A, 3B, 4, 5, 6, 7, 8, 9, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24
Plant Type Perennials
Plant Family Polygonaceae
Genus Persicaria
Common names Knotweed
Exposure Full Sun, Partial Sun
Season of Interest Summer (Mid, Late)
Fall
Height 3' - 4'
(90cm - 120cm)
Spread 3' - 4'
(90cm - 120cm)
Spacing 36" - 48"
(90cm - 120cm)
Maintenance Low
Water Needs Average, High
Soil Type Clay, Loam
Soil pH Acid, Alkaline, Neutral
Soil Drainage Moist but Well-Drained, Poorly Drained
Characteristics Dried Arrangements, Cut Flowers, Plant of Merit, Showy
Tolerance Deer, Rabbit
Attracts Birds, Butterflies, Bees
Garden Uses Beds And Borders, Bog Gardens, Ponds And Streams
Garden Styles Prairie and Meadow, Informal and Cottage, City and Courtyard
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Alternative Plants to Consider

Persicaria virginiana (Virginia Knotweed)
Persicaria affinis (Lesser Knotweed)
Persicaria affinis ‘Superba’ (Lesser Knotweed)
Persicaria amphibia (Amphibious Bistort)
Persicaria campanulata (Lesser Knotweed)
Persicaria amplexicaulis ‘Blackfield’ (Mountain Fleece)

Recommended Companion Plants

Miscanthus sinensis ‘Flamingo’ (Chinese Silver Grass)
Anemone tomentosa ‘Robustissima’ (Japanese Anemone)
Eupatorium maculatum (Spotted Joe-Pye Weed)
Symphyotrichum oblongifolium ‘October Skies’ (Aromatic Aster)
Calamagrostis x acutiflora ‘Karl Foerster’ (Feather Reed Grass)
Verbena bonariensis (Tall Verbena)

Find In One of Our Guides or Gardens

Persicaria amplexicaulis (Mountain Fleece)
While every effort has been made to describe these plants accurately, please keep in mind that height, bloom time, and color may differ in various climates. The description of these plants has been written based on numerous outside resources.
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Requirements

Hardiness 4 - 8
Heat Zones 1 - 8
Climate Zones 2, 2B, 3, 3A, 3B, 4, 5, 6, 7, 8, 9, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24
Plant Type Perennials
Plant Family Polygonaceae
Genus Persicaria
Common names Knotweed
Exposure Full Sun, Partial Sun
Season of Interest Summer (Mid, Late)
Fall
Height 3' - 4'
(90cm - 120cm)
Spread 3' - 4'
(90cm - 120cm)
Spacing 36" - 48"
(90cm - 120cm)
Maintenance Low
Water Needs Average, High
Soil Type Clay, Loam
Soil pH Acid, Alkaline, Neutral
Soil Drainage Moist but Well-Drained, Poorly Drained
Characteristics Dried Arrangements, Cut Flowers, Plant of Merit, Showy
Tolerance Deer, Rabbit
Attracts Birds, Butterflies, Bees
Garden Uses Beds And Borders, Bog Gardens, Ponds And Streams
Garden Styles Prairie and Meadow, Informal and Cottage, City and Courtyard
How Many Plants
Do I Need?
Explore Great Plant Combination Ideas
Persicaria
Guides with
Persicaria
Not sure which Persicaria to pick?
Compare Now

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