Persicaria amplexicaulis 'Blackfield'
A selection with glowing deep dark red flower spikes on a moderately compact plant. The darkest-coloured form in this group of persicarias. Plants form lush mounds of pointed foliage that nestle effectively between neighbours, filling available space while maintaining upward growth.
Adaptable to wide range of soil conditions except dry sites. Flowers appear from late June and continue with increasing profusion until frost. Excellent filler plant that melds with surrounding perennials. Strong vertical accent for borders and naturalistic schemes. Clumping habit, not invasive.
Growing Conditions
Light: full sun to part shade
Moisture: average to moist
Soil: adaptable except dry soils
Hardiness zone: 5
Maintenance: low to moderate
Size & Habit
Height (cm): 100
Spread (cm): 90
Habit: upright clump
Seasonal Interest
Flowering period: July–Oct
Seasonal interest: extended summer to fall bloom; deep red color; lush mounding foliage
Foliage: green
Flower: deep red
Ecology & Notes
Wildlife value: pollinators
Deer/Rabbit resistance: yes
Habitat: borders; naturalistic plantings; moist sites
Features: deep dark red spikes; darkest form; moderately compact; long flowering; fills spaces well; clumping
Notes: darkest colored selection; not invasive; excellent filler; flowers increasingly until frost