Plants by mail order since 1984 - over 4,100 plants online today!
Burncoose Nurseries - part of the Caerhays Estate
Nursery & Gardens open: Mon - Sat 08.30 - 16.30 & Sun 10:00 - 16:00
Pop up café: Open Thursday-Saturday 10.30 - 14.30 & Sunday 11.00 - 15.00( weather permitting )
  • A
    •
  • B
    •
  • C
    •
  • D
    •
  • E
    •
  • F
    •
  • G
    •
  • H
    •
  • I
    •
  • J
    •
  • K
    •
  • L
    •
  • M
    •
  • N
    •
  • O
    •
  • P
    •
  • Q
    •
  • R
    •
  • S
    •
  • T
    •
  • U
    •
  • V
    •
  • W
    •
  • X
    •
  • Y
    •
  • Z
    •
  • or use plant finder
    •
    DELPHINIUM
    DELPHINIUM 'Black Knight'
    DELPHINIUM 'Black Knight'
    © Burncoose Nurseries, all pictures for illustrative purposes only.
    <
    DELPHINIUM 'Black Knight' DELPHINIUM 'Black Knight' DELPHINIUM 'Black Knight' DELPHINIUM 'Black Knight'
    >

    DELPHINIUM 'Black Knight'

    Purple violet
    plant size comparison icon
    1.5 to 2 Litre   - Click to view photo
    Delivery Information
    Available again from NOVEMBER / DECEMBER 2025
    £13.00 each 
    MULTIBUY SAVING
    Any 3+ £11.00 each
    Available again from NOVEMBER / DECEMBER 2025 - Despatch will be anytime during November or December as stock becomes available. Bareroot hedging and roses can be delayed by unfavourable weather conditions.
     
    Full Plant Details - Sun/Soil & other attributes
    • Flowering
      local_florist
      Jan
      local_florist
      Feb
      local_florist
      Mar
      local_florist
      Apr
      local_florist
      May
      local_florist
      Jun
      local_florist
      Jul
      local_florist
      Aug
      local_florist
      Sep
      local_florist
      Oct
      local_florist
      Nov
      local_florist
      Dec
    • Good to know
      Pacific Hybrid group.
    • Pests & Diseases
      Slugs, snails, leaf miners, caterpillars, powdery mildew, crown rot on mature plants.
    • Place of origin
      Garden origin
    • Purple
      Shades of purple/mauve/lilac/violet
      Purple violet
    • Cup-shaped
      Shallowly cup-shaped
    • Semi-double
      Two rows of petals with conspicuous stamens
      To 7cm (3in) across
    • Spikes
    • Border
      Suits a mixed or herbaceous border
    • Cottage garden
    • Fully hardy
    • Height
      1.7m (5½ft)
    • Spread
      75cm (30in)
    • Herbaceous
      Early in the year, typically January till end of March, herbaceous plants might be supplied in 9cm pots to ensure timely despatch.
      perennial.
    • Hardy - cold winter
      Hardy 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)
    • Summer Seasonal Interest
    • Fertile well drained soil
    • Full sun
      Shelter from cold winds
    • harmful if eaten
      People and pets, i.e. cats, dogs, rabbits, rodents
    • may cause skin allergy
      People
    • Rabbit Resistant
    View Planting Tips and Care Advice
    Delphinium - Care Guide
    Herbaceous Plants - Video Collection
    View Customers Also Bought
    DELPHINIUM 'Blue Bird'

    DELPHINIUM 'Blue Bird'

    Available from £13.00
    view
    DELPHINIUM 'Summer Skies'

    DELPHINIUM 'Summer Skies'

    Available from £13.00
    view
    DELPHINIUM 'Galahad'

    DELPHINIUM 'Galahad'

    Available from £13.00
    view
    DELPHINIUM 'Astolat'

    DELPHINIUM 'Astolat'

    Available from £13.00
    view

    Useful extras...

    Vermin & Pest Control
    Copper Tape
    Quick and easy way to repel slugs and snails from your pots with this adhesive copper tape.
    £7.50
    Vermin & Pest Control
    Slug Pellets
    Slug killer blue mini pellets are easy to use and give effective control of slugs and snails. Ideal in garden, conservatory or greenhouse.
    800g
    £6.50
    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™.
    1 ltr
    £8.50
    arrow_drop_up