Bistorta amplexicaulis 'Inverleith'

RHS Plant Profile

red bistort 'Inverleith'

Synonyms

Persicaria amplexicaulis 'Inverleith'
Polygonum amplexicaule 'Inverleith'

Bogs Herbaceous Perennial

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A compact, clump-forming, semi-evergreen perennial to 1.2m in height with ovate, pointed, leathery, mid-green leaves from spring to autumn.Short, dense spikes of small, narrowly bell-shaped, reddish-pink flowers are borne from midsummer to autumn

Position

Full sun, Partial shade

Soil Types

Clay, Loam

Max Height

1-1.5 metres

Max Spread

1-1.5 metres

Size

Time to Maturity: 2–5 years
Max Spread: 1-1.5 metres
Max Height: 1-1.5 metres

Growing Conditions

Clay Loam

Moisture: Moist but well–drained or Poorly–drained
pH: Acid or Alkaline or Neutral

Position

Full sun Partial shade

Aspect: South–facing or North–facing or West–facing or East–facing
Exposure: Exposed or Sheltered
Hardiness

Hardiness Ratings

All ratings refer to the UK growing conditions unless otherwise stated. Minimum temperature ranges (in degrees C) are shown in brackets

H1A: under glass all year (>15C)
H1B: can be grown outside in the summer (10 - 15)
H1C: can be grown outside in the summer (5 - 10)
H2: tolerant of low temperatures, but not surviving being frozen (1 to 5)
H3: hardy in coastal and relatively mild parts of the UK (-5 to 1)
H4: hardy through most of the UK (-10 to -5)
H5: hardy in most places throughout the UK even in severe winters (-15 to -10)
H6: hardy in all of UK and northern Europe (-20 to -15)
H7: hardy in the severest European continental climates (< -20): H7

Colour & Scent

Season	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family: Polygonaceae
Native to GB/Ireland: No
Foliage: Semi evergreen
Habit: Clump forming
Genus: A genus of herbaceous, rhizomatous perennials with erect, unbranched stems, bearing short terminal spikes of small, white or pink, bell-shaped flowers
Name Status: Accepted

How to Grow

Cultivation

Does not like dry soil; will grow best in a bog garden or beside a pond in full sun or partial shade. Will attract bees and other insects. Substantial mounds of foliage steadily increase in size, needing space and careful siting

Propagation

Propagate by division in spring or autumn

Suggested planting locations and garden types

Wildlife gardens
Cottage and informal garden
Wildflower meadow
Flower borders and beds

Pruning

Cut back after flowering

Pests

Generally pest-free

Diseases

Generally disease-free