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Persicaria amplexicaulis 'Alba' (White-flowered red bistort)
1 hour care
per year
per year
1.2m
Max height
Max height
1m
Max spread
Max spread
2-5 years
To maturity
To maturity
Plant details
Botanical name
Persicaria amplexicaulis 'Alba'
Other names
White-flowered red bistort, Red bistort 'Alba', White mountain fleece, Knotweed 'Alba', White knotweed
Genus
Persicaria Persicaria
Variety or Cultivar
'Alba' _ 'Alba' is an upright, clump-forming, semi-evergreen perennial with ovate to lance-shaped, pointed, leathery, dark green leaves and long-stalked, narrow spikes of tiny, narrowly bell-shaped, white flowers from midsummer into autumn.
Persicaria amplexicaulis 'Alba' is: Deciduous
Habit
Clump-forming, Upright
Flower
White in Summer; White in Autumn
Foliage
Dark-green in Spring; Dark-green in Summer; Dark-green in Autumn
How to care
Watch out for
Pests
Generally pest-free.
Diseases
Generally disease-free.
General care
Pruning
Cut back after flowering.
Propagation methods
Division
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Where to grow
Persicaria amplexicaulis 'Alba' (White-flowered red bistort) will reach a height of 1.2m and a spread of 1m after 2-5 years.
Suggested uses
Beds and borders, Cottage/Informal, Low Maintenance, Prairie planting, Rock
Cultivation
Grow in any moist soil in sun or partial shade.
Soil type
Clay, Loamy
Soil drainage
Moist but well-drained, Moisture-retentive
Soil pH
Acid, Alkaline, Neutral
Light
Partial Shade, Full Sun
Aspect
North, South, East, West
Exposure
Exposed, Sheltered
UK hardiness Note: We are working to update our ratings. Thanks for your patience.
Hardy (H4)
Companion plants
Botanical name
Persicaria amplexicaulis 'Alba'
Other names
White-flowered red bistort, Red bistort 'Alba', White mountain fleece, Knotweed 'Alba', White knotweed
Genus
Persicaria Persicaria
Variety or Cultivar
'Alba' _ 'Alba' is an upright, clump-forming, semi-evergreen perennial with ovate to lance-shaped, pointed, leathery, dark green leaves and long-stalked, narrow spikes of tiny, narrowly bell-shaped, white flowers from midsummer into autumn.
Foliage
Deciduous
Habit
Clump-forming, Upright
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Colour
Flower
White in Summer; White in Autumn
Foliage
Dark-green in Spring; Dark-green in Summer; Dark-green in Autumn
How to care
Watch out for
Pests
Generally pest-free.
Diseases
Generally disease-free.
General care
Pruning
Cut back after flowering.
Propagation methods
Division
Monthly care advice
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Where to grow
Persicaria amplexicaulis 'Alba' (White-flowered red bistort) will reach a height of 1.2m and a spread of 1m after 2-5 years.
Suggested uses
Beds and borders, Cottage/Informal, Low Maintenance, Prairie planting, Rock
Cultivation
Grow in any moist soil in sun or partial shade.
Soil type
Clay, Loamy
Soil drainage
Moist but well-drained, Moisture-retentive
Soil pH
Acid, Alkaline, Neutral
Light
Partial Shade, Full Sun
Aspect
North, South, East, West
Exposure
Exposed, Sheltered
UK hardiness Note: We are working to update our ratings. Thanks for your patience.
Hardy (H4)
USDA zones
Zone 9, Zone 8, Zone 7, Zone 6, Zone 5
In order to add a note on this plant, please add this plant to your plant lists.
| This plant likes... | Garden match | |
| Soil types: | Clay, Loamy | Tell us... |
| Soil drainage: | Moist but well-drained, Moisture-retentive | Tell us... |
| Soil pH: | Acid, Alkaline, Neutral | Tell us... |
| Light: | Partial Shade, Full Sun | Tell us... |
| Aspect: | North, South, East, West | Tell us... |
| Exposure: | Exposed, Sheltered | Tell us... |
| Hardiness: | Hardy (H4) | Tell us... |
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