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Persicaria bistorta 'Superba' (Knotweed 'Superba')

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Skill rating Beginner
skill rating
Ultimate spread 1m
max. spread
Ultimate height 0.75m
max. height
Time to maturity 5-10 years
to maturity
Maintenance level 1 hour care
per year

Botanical name: Persicaria bistorta 'Superba'

Other names: Knotweed 'Superba', Adderwortel


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Genus: Persicaria

Variety or cultivar: 'Superba' _ 'Superba' is a mat-forming, semi-evergreen perennial with large, ovate foliage and spikes of large, white bottlebrush flowers from late-summer to early-autumn.

Persicaria bistorta 'Superba' is: Semi evergreen

Foliage: Green in Summer; Brown in Autumn; Brown in Winter

Habit: Creeping, Erect flower stem, Mat Forming

Awards: RHS AGM (Award of Garden Merit)

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Watch out for

Pests: Generally pest-free.

Diseases: Generally disease-free.

General care

Pruning: Cut the plant back after flowering has finished. REGISTER to read more...

Propagation methods: Division. REGISTER to read more...


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Persicaria bistorta 'Superba' (Knotweed 'Superba') will reach a height of 0.75m and a spread of 1m after 5-10 years.


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Suggested uses: Beds and borders, Bog garden, Cottage/Informal, Ground Cover, Low Maintenance, Waterside

Cultivation: Plant in any moist soil in sun or partial shade. Also likes a boggy, water edge position.

Suitable for your garden?
In progress indicator
This plant likes... Garden match
Soil types: Clay, Loamy Match unknown
Soil drainage: Moist but well-drained Match unknown
Soil pH: Acid, Alkaline, Neutral Match unknown
Light: Partial Shade, Full Sun Match unknown
Aspect: North, South, East, West Match unknown
Exposure: Exposed, Sheltered Match unknown
Hardiness: Hardy (H4) Match unknown

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We list 37 suppliers who tell us they sell Persicaria bistorta 'Superba' (Knotweed 'Superba'). In order to see the list you'll need to either register or log in as a full member.


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Gardens with this plant

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claire's garden
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Paul Jackson
Paul Jackson

 

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