Alphabetical Plant Listing

Persicaria amplexicaulis (Mountain Fleece)

Mountain Fleece, Knotweed, Bistort, Polygonum amplexicaule (Persicaria Amplexicaulis)


A real beauty for the border, Mountain Fleece (Persicaria amplexicaulis) is a vigorous, upright perennial enjoying an extremely long bloom season from early summer to fall. Semi-evergreen, this Himalayan native features abundant, cheerful red, pink, purple or white bottle-brush-like flower spikes, 4 in. long (10 cm), held on graceful wands atop bushy clumps of large, slightly puckered leaves.

  • Typically growing 3-4 feet tall and wide (90-120 cm), Mountain Fleece thrives in average, medium to wet, well-drained soils in full sun to part shade. Best flowering occurs in full sun, however light shade will be enjoyed in hot and humid summer areas.
  • A welcomed addition to beds, borders, where Persicaria amplexicaulis provides long summer to fall bloom in the perennial border. Ideal candidate along ponds and streams or in meadows.
  • Attracts birds and butterflies, but deer ignore it!
  • All plant parts may cause skin irritation on contact and stomach upset if ingested. 
  • Trouble-free and easy care, many cultivars are available as an indication of the popularity of this perennial plant. 

Guide Information

Hardiness 4 - 9
Heat Zones 1 - 8
Climate Zones 3, 4, 5, 6, 7, 8, 9, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 2B
Plant Type Perennials
Plant Family Persicaria - Fleeceflowers
Exposure Full Sun, Partial Sun
Season of Interest Summer (Early,Mid,Late)
Fall
Height 3' - 4' (90cm - 120cm)
Spread 3' - 4' (90cm - 120cm)
Spacing 36" - 48" (90cm - 120cm)
Water Needs Average
Maintenance Low
Soil Type Clay, Loam
Soil pH Acid, Alkaline, Neutral
Soil Drainage Moist but Well-Drained, Moisture Retentive, Poorly Drained
Characteristics Dried Arrangements, Cut Flowers, Showy
Tolerance Deer
Attracts Birds, Butterflies
Landscaping Ideas Beds and Borders, Ponds and Streams
Garden Styles Informal and Cottage, Prairie and Meadow

rmorijn / 123RF Stock Photo

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.

Guide Information

Hardiness 4 - 9
Heat Zones 1 - 8
Climate Zones 3, 4, 5, 6, 7, 8, 9, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 2B
Plant Type Perennials
Plant Family Persicaria - Fleeceflowers
Exposure Full Sun, Partial Sun
Season of Interest Summer (Early,Mid,Late)
Fall
Height 3' - 4' (90cm - 120cm)
Spread 3' - 4' (90cm - 120cm)
Spacing 36" - 48" (90cm - 120cm)
Water Needs Average
Maintenance Low
Soil Type Clay, Loam
Soil pH Acid, Alkaline, Neutral
Soil Drainage Moist but Well-Drained, Moisture Retentive, Poorly Drained
Characteristics Dried Arrangements, Cut Flowers, Showy
Tolerance Deer
Attracts Birds, Butterflies
Landscaping Ideas Beds and Borders, Ponds and Streams
Garden Styles Informal and Cottage, Prairie and Meadow
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