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Persicaria virginiana 'Alba' (Virginia knotweed 'Alba')
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1 hour care
per year
per year
0.9m
Max height
Max height
0.6m
Max spread
Max spread
2-5 years
To maturity
To maturity
Low
Toxicity
Toxicity
Plant details
Botanical name
Persicaria virginiana 'Alba'
Other names
Virginia knotweed 'Alba', White Virginia knotweed, Jumpweed 'Alba', Tovaro 'Alba'
Genus
Persicaria Persicaria
Variety or Cultivar
'Alba' _ 'Alba' is an upright, clump-forming, herbaceous perennial bearing ovate, finely-hairy, maroon-marked, mid- to bright green leaves. Slender, loose racemes of tiny, white flowers bloom in late summer and early autumn.
Persicaria virginiana 'Alba' is: Deciduous
Habit
Clump-forming, Upright
Toxicity
Contact may irritate skin. Sap may cause mild stomach upset if ingested.
Flower
White in Summer; White in Autumn
Foliage
Bright-green, Variegated, Striped in Spring; Variegated, Striped, Bright-green in Summer; Variegated, Striped, Bright-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 virginiana 'Alba' (Virginia knotweed 'Alba') will reach a height of 0.9m and a spread of 0.6m after 2-5 years.
Suggested uses
Beds and borders, Cottage/Informal, Low Maintenance, Prairie planting
Cultivation
Plant in any moist soil in sun or partial shade. Tends to self-seed so deadhead if necessary to avoid spread.
Soil type
Clay, Loamy, Sandy
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
We do not currently have companion plants added for this plant.
Botanical name
Persicaria virginiana 'Alba'
Other names
Virginia knotweed 'Alba', White Virginia knotweed, Jumpweed 'Alba', Tovaro 'Alba'
Genus
Persicaria Persicaria
Variety or Cultivar
'Alba' _ 'Alba' is an upright, clump-forming, herbaceous perennial bearing ovate, finely-hairy, maroon-marked, mid- to bright green leaves. Slender, loose racemes of tiny, white flowers bloom in late summer and early autumn.
Native to
Garden origin
Foliage
Deciduous
Habit
Clump-forming, Upright
Toxicity
Contact may irritate skin. Sap may cause mild stomach upset if ingested.
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Colour
Flower
White in Summer; White in Autumn
Foliage
Bright-green, Variegated, Striped in Spring; Variegated, Striped, Bright-green in Summer; Variegated, Striped, Bright-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 virginiana 'Alba' (Virginia knotweed 'Alba') will reach a height of 0.9m and a spread of 0.6m after 2-5 years.
Suggested uses
Beds and borders, Cottage/Informal, Low Maintenance, Prairie planting
Cultivation
Plant in any moist soil in sun or partial shade. Tends to self-seed so deadhead if necessary to avoid spread.
Soil type
Clay, Loamy, Sandy
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, Sandy | 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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