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![Royal Horticultural Society 'Award of Garden Merit' (AGM) AWARD](https://www.burncoose.co.uk/site/img/artwork/badges/award.64.png)
PERSICARIA microcephala 'Red Dragon'
Commonly known as Bistort, Knotweed
Tall and spreading variety with dramatic brownish-red leaves with black markings
Further Reading....
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White
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Height1m (39in)
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Spread50cm (20in)
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Ground coverThese plants are typically low growing and spread quickly to inhibit weed growth on areas of bare soil
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HerbaceousEarly in the year, typically January till end of March, herbaceous plants might be supplied in 9cm pots to ensure timely despatch.Erect, clump-forming, woody-based perennial with ovate leaves to 8cm (3in) long. Produces small spherical clusters 1cm (½in) across of flowers on stalks to 4cm (1½in) long from the axils of the upper leaves.
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Hardy - cold winterHardy in most places throughout the UK even in severe winters. May not withstand open/exposed sites or central/northern locations. Plant can withstand temperatures down to -15°C (5°F)
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Full sun
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Partial shade
PERSICARIA microcephala 'Red Dragon'
- Details
- Description
- Mature Size
- Tips and Advice
- Goes Well With
- Planting Combinations
- Other Suggestions
- See Also...
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Additional FeaturesPests & DiseasesNone.Place of originGarden origin.Resistant to honey fungusThese plants have little or few problems with honey fungus.
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Garden Location/ConditionsBorderSuitable for a mixed or herbaceous border
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HardinessFully hardy
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Leaf Colour (if not green)Red
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Seasonal InterestSummer
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Soil ConditionsTolerates allAny moist soil
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WildlifeRabbit Resistant
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
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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
- Self-seeding aquilegia - 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
- Overpotting Problems - Video Tip ondemand_video
Persicaria - Growing Guide
1m (39in)
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50cm (20in) |
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![ACHILLEA 'Inca Gold' ACHILLEA 'Inca Gold'](https://www.burncoose.co.uk/site/img/products/square/achillea_inca_gold~2.jpg)
ACHILLEA 'Inca Gold'
Available from £12.50
![ALLIUM giganteum ALLIUM giganteum](https://www.burncoose.co.uk/site/img/products/square/allium_giganteum_233.jpg)
ALLIUM giganteum
Giant ornamental onion
ARUNCUS 'Kneiffii'
BERGENIA cordifolia
Elephant's ears, Megasea
![CLERODENDRUM trichotomum var fargesii CLERODENDRUM trichotomum var fargesii](https://www.burncoose.co.uk/site/img/products/square/clerodendrum_trichotomum_var_fargesii_1189.jpg)
CLERODENDRUM trichotomum var fargesii
Glory tree, Glory bower
Available from £20.00
![ERYNGIUM bourgatii 'Picos Blue' ERYNGIUM bourgatii 'Picos Blue'](https://www.burncoose.co.uk/site/img/products/square/eryngium_bourgatii_picos_blue_1747.jpg)
ERYNGIUM bourgatii 'Picos Blue'
Sea holly
Available from £13.50
![EUPHORBIA palustris EUPHORBIA palustris](https://www.burncoose.co.uk/site/img/products/square/euphorbia_palustris~4.jpg)
EUPHORBIA palustris
Available from £12.50
![EUPHORBIA x pasteurii EUPHORBIA x pasteurii](https://www.burncoose.co.uk/site/img/products/square/euphorbia_pasturei_6407.jpg)
EUPHORBIA x pasteurii
Available from £17.50
![GAURA lindheimeri 'The Bride' GAURA lindheimeri 'The Bride'](https://www.burncoose.co.uk/site/img/products/square/gaura_lindheimeri_the_bride_5914.jpg)
GAURA lindheimeri 'The Bride'
Available from £13.50
![GERANIUM himalayense GERANIUM himalayense](https://www.burncoose.co.uk/site/img/products/square/geranium_himalayense.jpg)
GERANIUM himalayense
Cranesbill
Available from £13.50
![MONARDA 'Prairie Night' MONARDA 'Prairie Night'](https://www.burncoose.co.uk/site/img/products/square/monarda_prairie_night_5701.jpg)
MONARDA 'Prairie Night'
Available from £13.50
![PERSICARIA PERSICARIA](https://www.burncoose.co.uk/site/img/products/square/persicaria_microsephala_red_dragon_5140~1s.jpg)
PERSICARIA
(Polygonum) - Knotweed
![PERSICARIA bistorta 'Superba' PERSICARIA bistorta 'Superba'](https://www.burncoose.co.uk/site/img/products/square/persicaria_bistorta_superba_3169.jpg)
PERSICARIA bistorta 'Superba'
(Polygonum) Bistort, Adderwort
Available from £12.50
![PHLOMIS russeliana PHLOMIS russeliana](https://www.burncoose.co.uk/site/img/products/square/phlomis_russeliana_5346a.jpg)
PHLOMIS russeliana
Turkish sage
Available from £14.50
![SALVIA SALVIA](https://www.burncoose.co.uk/site/img/products/square/salvia_amante_6689~2.jpg)
SALVIA
Sage
![SORBARIA sorbifolia SORBARIA sorbifolia](https://www.burncoose.co.uk/site/img/products/square/sorbaria_sorbifolia_3994.jpg)
SORBARIA sorbifolia
False spiraea
Available from £16.00
Useful extras...
![](https://www.burncoose.co.uk/site/img/products/squaremedium/Vitax_Q4_6202.jpg)
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
![](https://www.burncoose.co.uk/site/img/products/squaremedium/grow_your_own_front_22.jpg)
Fertilisers & Feeds - Empathy
Afterplant - Grow Your Own
AFTER PLANT GROW YOUR OWN seaweed is ready to use liquid concentrate that was specially formulated be used on all edible plants.
Only £8.00
![](https://www.burncoose.co.uk/site/img/products/squaremedium/tomatoe_front.jpg)
Fertilisers & Feeds - Empathy
Afterplant - Tomatoes
AFTER PLANT TOMATO FEED Liquid Concentrate with Bio stimulant is a high potash liquid concentrate containing seaweed extract, plant derived amino acids and other nutrients specifically formulated to benefit tomatoes and greenhouse plants.
Only £8.00
![](https://www.burncoose.co.uk/site/img/products/squaremedium/rootgrow_6203.jpg)
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)
3 options from £3.00
![](https://www.burncoose.co.uk/site/img/products/squaremedium/RootgrowEricoid_6204.jpg)
Fertilisers & Feeds - Empathy
Rootgrow Ericoid mycorrhizal fungi
This specially adapted Rootgrow™ mycorrhizal fungi will boost the growth of acid-loving plants like rhododendrons, azaleas, heathers and blueberries.
It contains ericoid and arbuscular mycorrhizal fungi, which are found in poor acidic soils where ericaceous plants naturally grow.
Only £7.50
![](https://www.burncoose.co.uk/site/img/products/squaremedium/empathy-allpurpose_6208.jpg)
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