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Wishing all our customers a Happy New Year.
PERSICARIA alpina
Commonly known as Alpine knotweed
(syn. P. polymorpha) - tall growing with tall stems or plumes of creamy-white flowers
Further Reading....
- Details
- Description
- Mature Size
- Tips and Advice
- Goes Well With
- Planting Combinations
- Other Suggestions
- See Also...
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Deciduous - linear to narrowly lance-shaped leaves to 15cm (6in) long on stalks 1cm (½in) long
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White - creamy white -
Height - to 1.8m (6ft) -
Spread - to 1.5m (5ft)
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Bulb/Corm or rhizomatous perennial - erect, clump-forming rhizomatous perennial, many branched from the middle upwards. Produces spikes of cup- to funnel-shaped flowers to 15cm (6in) long
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Herbaceous - Early in the year, typically January till end of March, herbaceous plants might be supplied in 9cm pots to ensure timely despatch.
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Hardy - very cold winter - Hardy in all of UK and northern Europe. Plant can possibly withstand temperatures down to -20°C (-4°F) -
Full sun -
Partial shade -
Additional Features - Good to know - also known as Polygonum alpinum acc. to RHS in the AtoZ (height and spread to 1m) and also Persicaria polymorpha by the RHS online (height and spread 2m x 1.5m) -
Pests & Diseases - none -
Place of origin - Eurasia -
Resistant to honey fungus - These plants have little or few problems with honey fungus.
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Hardiness - Fully hardy
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Seasonal Interest - Summer
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Soil Conditions - Tolerates all - any moist soil
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Herbaceous Plants - Video Collection
- Dividing Herbaceous Perennials - Video Tip ondemand_video
- Spring Planting Osteospermums - Video Tip ondemand_video
- Dividing Summer Perennials - Video Tip ondemand_video
- Dividing summer flowering Hemerocallis - Video Tip ondemand_video
- Summer propagation - Video Tip ondemand_video
- Supporting Plants - Video Tip ondemand_video
- Dead heading meconopsis - Video Tip ondemand_video
- Dead heading Delphiniums - Video Tip ondemand_video
- Feeding herbaceous peonies - Video Tip ondemand_video
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to 1.8m (6ft)
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to 1.5m (5ft) |
ERYNGIUM bourgatii 'Picos Blue'
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Available from £11.50
PERSICARIA
(Polygonum) - Knotweed
PERSICARIA amplexicaulis 'Blackfield'
Knotweed
Available from £12.50
PHLOX paniculata 'Chattahoochee'
Border phlox
Available from £12.50
SALVIA 'Embers Wish'
Available from £12.50
SEDUM spectabile 'Brilliant'
Ice plant
Available from £11.50
Useful extras...
Harrod Horticulture Plant Supports - Plant & Border Supports
Curved border restraints
The border restraints are made from sturdy, solid 6mm galvanised steel wire and powder coated dark olive green, available in a variety of sizes providing strong plant support to stop plants falling across lawns and paths
4 options from £14.50
Fertilisers & Feeds - Vitax
Q4 Pelleted Fertiliser
A useful fertiliser suitable for use on a wide variety of plants. Q4 provides all the nutrients and trace elements essential for vigorous growth, abundant flowering and ripening of fruit.
3 options from £6.00
Fertilisers & Feeds - Empathy
Rootgrow mycorrhizal fungi
Recommended by the RHS. Contains Rootgrow™ mycorrhizal fungi. Suitable for all trees and shrubs (except rhododendrons, azaleas, heathers, cranberries and blueberries)
2 options from £6.00
Fertilisers & Feeds - Empathy
All-purpose Seaweed Stimulant
All-purpose organic concentrated seaweed feed that is a ready to use, derived from sustainable harvested kelp, that can be used on all outdoor and indoor plants, except acid loving plants.
Perfect used in conjunction with Rootgrow™.
Only £7.50
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