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Hardy's Cottage Garden Plants

Bistorta amplexicaulis 'Blackfield' PBR

Bistorta amplexicaulis 'Blackfield' PBR

Regular price £9.50 GBP
Regular price Sale price £9.50 GBP
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Plants are dispatched in growing condition and may not be in full flower. If too tall to pack safely, we may cut them back — this helps them establish more quickly. Read our Mail Order FAQs.

Pollinator Friendly RHS Award of Garden Merit

‘Blackfield’ is a particularly striking cultivar, its deep red bottlebrush flowers dancing in the breeze on willowy stems from midsummer deep into autumn. The near heart-shaped, dark green leaves clasp the stems — a characteristic reflected in the species name amplexicaulis.

Bred by Chris Ghyselen in Belgium and introduced in 2005, ‘Blackfield’ is a more compact form than most amplexicaulis cultivars. It thrives in sun or partial shade with fertile, moisture-retentive soil — ideal alongside streams, ponds and in boggy situations, where it will slowly spread. Its naturalistic good looks suit moist meadow, prairie and informal cottage garden schemes. Build on its depth of colour by combining with purples, oranges and pinks, or pair with Succisa pratensis for a striking contrast of flower form. Pollinators love it.

Synonym: Persicaria amplexicaulis ‘Blackfield’

Height × Spread: 90cm × 50cm

☀️ Sunlight Full sun, Partial shade
📅 Season of Interest Summer, Autumn
🌸 Flower Colour Red
🌿 Foliage Colour Dark green
🪏 Preferred Soil Type Clay, Loamy
💧 Soil Moisture Content Moderate, High
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  • Care Guide:

    Plant in moist, fertile soil enriched with organic matter, in full sun or partial shade. Tolerates heavier soils well and is reliably hardy. Mulching annually will help maintain soil fertility and moisture retention. Once established, spreads steadily to form effective weed-suppressing ground cover. Cut back after flowering or in late winter or spring before new growth begins. Divide clumps in autumn or spring to control spread and keep plants vigorous or to propagate.

  • Good to Know

    Wildlife-friendly — the nectar-rich flower spikes are highly attractive to bees, butterflies and other pollinators.

    Adaptable and easy to grow, even in heavier soils.