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Persicaria affinis 'Darjeeling Red' (Knotweed 'Darjeeling Red')

Beginner
skill rating
1 hour care
per year
0.3m
Max height
0.5m
Max spread
5-10 years
To maturity
Low
Toxicity

Plant details

Botanical name

Persicaria affinis 'Darjeeling Red'

Other names

Knotweed 'Darjeeling Red', Polygonum affine 'Darjeeling Red'

Genus

Persicaria Persicaria

Variety or Cultivar

'Darjeeling Red' _ 'Darjeeling Red' is a mat-forming, semi-evergreen perennial with large, elliptic to lance-shaped, dark green leaves and, from midsummer to mid-autumn, erect spikes of pink flowers that turn red as they mature.


Persicaria affinis 'Darjeeling Red' is: Semi evergreen

Habit

Mat Forming

Toxicity

Contact with all parts may cause skin irritation. Sap may cause stomach upset if ingested.

Awards

RHS AGM (Award of Garden Merit)

Flower

Dark-pink, Pale-pink in Summer; Dark-pink, Pale-pink in Autumn

Foliage

Dark-green in Spring; Dark-green in Summer; Dark-green, Bronze in Autumn; Bronze in Winter

How to care

Watch out for

Pests

Generally pest-free.

Diseases

Generally disease-free.

General care

Pruning

Deadhead spent flower spikes.

Propagation methods

Division


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Where to grow

Persicaria affinis 'Darjeeling Red' (Knotweed 'Darjeeling Red') will reach a height of 0.3m and a spread of 0.5m after 5-10 years.

Suggested uses

Cottage/Informal, Beds and borders, Garden edging, Ground Cover, Low Maintenance, Prairie planting, Rock

Cultivation

Plant in any moist, free-draining soil in sun or partial shade.

Soil type

Chalky, Clay, Loamy, Sandy (will tolerate most soil types)

Soil drainage

Moisture-retentive, Moist but well-drained

Soil pH

Acid, Alkaline, Neutral

Light

Partial Shade, Full Sun

Aspect

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 affinis 'Darjeeling Red'

Other names

Knotweed 'Darjeeling Red', Polygonum affine 'Darjeeling Red'

Genus

Persicaria Persicaria

Variety or Cultivar

'Darjeeling Red' _ 'Darjeeling Red' is a mat-forming, semi-evergreen perennial with large, elliptic to lance-shaped, dark green leaves and, from midsummer to mid-autumn, erect spikes of pink flowers that turn red as they mature.

Native to

Himalayas

Foliage

Semi evergreen

Habit

Mat Forming

Toxicity

Contact with all parts may cause skin irritation. Sap may cause stomach upset if ingested.

Awards

RHS AGM (Award of Garden Merit)


Colour

Flower

Dark-pink, Pale-pink in Summer; Dark-pink, Pale-pink in Autumn

Foliage

Dark-green in Spring; Dark-green in Summer; Dark-green, Bronze in Autumn; Bronze in Winter


How to care

Watch out for

Pests

Generally pest-free.

Diseases

Generally disease-free.

General care

Pruning

Deadhead spent flower spikes.

Propagation methods

Division


Monthly care advice


Where to grow

Persicaria affinis 'Darjeeling Red' (Knotweed 'Darjeeling Red') will reach a height of 0.3m and a spread of 0.5m after 5-10 years.

Suggested uses

Cottage/Informal, Beds and borders, Garden edging, Ground Cover, Low Maintenance, Prairie planting, Rock

Cultivation

Plant in any moist, free-draining soil in sun or partial shade.

Soil type

Chalky, Clay, Loamy, Sandy (will tolerate most soil types)

Soil drainage

Moisture-retentive, Moist but well-drained

Soil pH

Acid, Alkaline, Neutral

Light

Partial Shade, Full Sun

Aspect

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 8, Zone 7, Zone 6, Zone 5

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This plant likes... Garden match
Soil types: Chalky, Clay, Loamy, Sandy (will tolerate most soil types) Tell us...
Soil drainage: Moisture-retentive, Moist but well-drained Tell us...
Soil pH: Acid, Alkaline, Neutral Tell us...
Light: Partial Shade, Full Sun Tell us...
Aspect: South, East, West Tell us...
Exposure: Exposed, Sheltered Tell us...
Hardiness: Hardy (H4) Tell us...

DISCUSS THIS PLANT

Dargeaeling Red

Can I cut this Plant back now . How far can I prune back. read more

perisicaria darjeeling red when to cut back

planted one of these in summer. all foliage turned brown in this cold winter but still appears alive. looks very shabby. can i cut back now? or do i have to wait until spring to cut it back? thanks read more

This plant is featured at Chelsea Flower Show 2009

Persicaria affinis 'Darjeeling Red' (Knotweed 'Darjeeling Red') has been used in The HESCO Garden by Leeds City Council for Chelsea Flower Show 2009. read more

There is 1 active discussion about Persicaria affinis 'Darjeeling Red' (Knotweed 'Darjeeling Red')

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GARDENS WITH THIS PLANT

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Bar lawson
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Shelagh McIntosh
Millgreen Garden
Millgreen Garden
Kevin Simpson
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Jane
The Old Rectory
The Old Rectory
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ARTICLES WITH THIS PLANT

Show gardens: Trailfinders

Garden designer Jonathan Snow returns to Main Avenue for a third successive year with sponsor Trailfinders read more

Times Eureka Garden with the Royal Botanic Gardens, Kew

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