Plants by mail order since 1984, over 4100 plants online today!


My Burncoose




Please click here for latest ordering information. We are having to implement an hourly limit in order numbers due to demand. We are short staffed, so the phone is not being answered as quickly as normal. We are despatching your orders as fast as possible, however there may be a delay of up to two weeks. UK orders only no exports.

Please note once despatched, your delivery may take 1-3 days due to the high volume with the couriers. Your plants will be fine during this time.

Full plant information & availability is shown online.

The nursery is now open to the public between 10am and 4pm. Please follow instructions on site, card payments only, no cash. Click and collect is also available.

Last updated 14/05/20 10:00.


Sorry, you cannot proceed to the checkout right now as we are having to limit the number of orders we can process each hour. Your basket will be saved for you - we ask that you please try to place your order later, and thank you for your patience


Commonly known as (Polygonum) - Knotweed

Genus of about 150 annuals and perennials. They may be evergreen, semi-evergreen or deciduous and many spread by stolons leading to a spreading habit which can be invasive. This habit and their commonly used name knotweed can give cause for concern but used wisely they are worthy performers. They are found in a variety of habitats worldwide and most have long-lasting spikes of flowers followed by distinctive 3-angled or ovoid fruits.

  • Deciduous
  • Evergreen
  • Semi-evergreen - Keeps some of its foliage all year, and will drop some leaves as well.
  • Red
  • Shades of pink - All shades of pink through to Carmine (red)
  • White
  • Full sun
  • Partial shade
  • May cause skin allergy or irritant - Having skin or eye contact with these plants could result in an allergic reaction, burning or rash.
  • Additional Features - Good to know - - poker type flowers. Some have attractive autumn colour. Some are invasive. Wildlife plant - insects.
  • Pests & Diseases - generally trouble-free.
  • Place of origin - various habitats around the world.
  • Resistant to honey fungus - These plants have little or few problems with honey fungus.
  • Soil Conditions - Fertile moist well-drained soil - - will tolerate any moist soil

Buy Varieties of PERSICARIA


PERSICARIA affinis  >

Commonly known as: Knotweed, Polygonum.
Deep pink
individually £10.50 each, 3+ £8.00 each

PERSICARIA affinis 'Darjeeling Red'  AWARD

PERSICARIA affinis 'Darjeeling Red'  >

Commonly known as: Knotweed, Polygonum.
Excellent ground cover with bright crimson flowers
individually £10.50 each, 3+ £8.00 each


PERSICARIA alpina  >

Commonly known as: Alpine knotweed.
(syn. P. polymorpha) - tall growing with tall stems or plumes of creamy-white flowers
individually £11.50 each, 3+ £9.00 each

PERSICARIA amplexicaulis 'Blackfield'

PERSICARIA amplexicaulis 'Blackfield'  >

Commonly known as: Knotweed, Polygonum.
Slender flowers in deep red-black. A smouldering beauty
individually £12.50 each, 3+ £10.00 each
Notify me when this plant is available to order
Available again FEBRUARY 2021 - fresh stock in late winter/early spring

PERSICARIA bistorta 'Superba'   AWARD

PERSICARIA bistorta 'Superba'  >

Commonly known as: Adderwort, Bistort, Polygonum.
Clear pink poker flowers
individually £11.50 each, 3+ £9.00 each

PERSICARIA microcephala 'Red Dragon'

PERSICARIA microcephala 'Red Dragon'  >

Commonly known as: Bistort, Knotweed.
Tall and spreading variety with dramatic brownish-red leaves with black markings
individually £12.50 each, 3+ £10.00 each

PERSICARIA 'Silver Dragon'

PERSICARIA 'Silver Dragon'  >

Commonly known as: Knotweed.
Silvery-green pointed leaves which are darker on the edge and veined with red
individually £12.50 each, 3+ £10.00 each

PERSICARIA vaccinifolia   AWARD

PERSICARIA vaccinifolia  >

Commonly known as: Knotweed, Polygonum.
Tiny pink flowers, good ground cover, and excellent autumn colour
individually £10.50 each, 3+ £8.00 each

Visit the Caerhays Castle website
Order the 2020 Burncoose Catalogue
Payment methods accepted
watch us on you tube
Visit Burncoose House - Holiday Accommodation
Burncoose Nurseries: Gwennap, Redruth, Cornwall TR16 6BJ
Telephone: +44 (0) 1209 860316 Fax: +44 (0) 1209 860011 Email:
© Burncoose Nurseries 1997 - 2020      Website by Forgecom
All plant pictures are copyright © Burncoose Nurseries unless otherwise stated.
No rights are given to download any of our pictures and use them (for personal or professional use) without our consent.