Bog Plant, Perennial

Persicaria amplexicaulis ‘Blackfield’

Red Bistort 'Blackfield'
Award Winner Loved by Pollinators Hardiness H7

Bistorta amplexicaulis ‘Blackfield’ (PBR) produces tall, slender spikes of deep blood-red flowers that emerge from near-black buds through summer and autumn. Its clump-forming habit and heart-shaped leaves create a bold backdrop for borders. Recognised with the RHS Award of Garden Merit and loved by pollinators, this medium perennial thrives in moist soil, making it a strong choice for Irish wildlife-friendly gardens.
SKU: BIS-9CM-TS4O3U
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Flowering Months
Jan J
Feb F
Mar M
Apr A
May M
Jun J
Jul J
Aug A
Sep S
Oct O
Nov N
Dec D
Size
Max Height
0.5 m — 1.0 m
Max Spread
0.5 m — 1.0 m
Growth Habit
Grows in tight bunches from base, forming rounded groups.
Planting Position
Sunlight i Indicates how much direct sunlight the plant needs each day. Full sun means 6+ hours, part shade is filtered or morning sun, and full shade is little to no direct sun.
Full Sun
Aspect i Aspect refers to the direction the planting spot faces (north, south, east or west). It affects light levels, warmth and exposure.
North South East West
Exposure i Exposure describes how sheltered or exposed a plant’s position is, particularly to wind and weather.
Exposed / Sheltered
Hardiness i Hardiness indicates how well a plant tolerates cold conditions outdoors. Higher ratings generally mean greater frost tolerance.
(< −20 °C) Extremely hardy
Ideal Soil Conditions
Soil Type i Soil type describes the texture of the soil (clay, sand, loam, chalk). This affects drainage, nutrients and how roots grow.
Clay Loam
Soil Moisture i Soil moisture tells you how wet or dry the soil should be for best growth. Match this to your garden conditions for healthier plants.
Moist but permeable / Poorly-drained / Free draining
Soil pH i Soil pH measures how acidic or alkaline the soil is. It affects nutrient availability and can impact plant growth.
Acid Alkaline Neutral
Plant Uses & Merits
Uses
  • Flower Borders
Merits
  • Generally disease-free
  • Generally pest-free
  • No pruning required
  • RHS | Award Of Garden Merit
  • Loved By Pollinators

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