Delphinium Delgenius Kingsley ('Et Dlp 807') (Delgenius Series)

RHS Plant Profile
delphinium [Delgenius Kingsley]

Save a plant

Where do you want to save Delphinium Delgenius Kingsley ('Et Dlp 807') (Delgenius Series)?

Plants I own
Wishlist
Go to My Plants

Synonyms

Delphinium 'Et Dlp 807'

Plants for pollinators
Herbaceous Perennial
Buy this from Plant Nurseries
1 Suppliers

Produces tall spires of deep purple-blue flowers, above a ruffled mound of green foliage. Great for providing height within a border and is loved by bees and other pollinating insects. Flowers throughout summer and sometimes into early autumn

Position

Full sun

Soil Types

Chalk, Loam, Sand

Max Height

0.5-1 metres

Max Spread

0.5-1 metres

Size

Time to Maturity
2–5 years
Max Spread
0.5-1 metres
Max Height
0.5-1 metres

Growing Conditions

Chalk Loam Sand
Moisture
Moist but well–drained
pH
Alkaline or Neutral

Position

Full sun
Aspect
East–facing or South–facing or West–facing
Exposure
Sheltered
Hardiness

Hardiness Ratings

All ratings refer to the UK growing conditions unless otherwise stated. Minimum temperature ranges (in degrees C) are shown in brackets

  • H1A: under glass all year (>15C)
  • H1B: can be grown outside in the summer (10 - 15)
  • H1C: can be grown outside in the summer (5 - 10)
  • H2: tolerant of low temperatures, but not surviving being frozen (1 to 5)
  • H3: hardy in coastal and relatively mild parts of the UK (-5 to 1)
  • H4: hardy through most of the UK (-10 to -5)
  • H5: hardy in most places throughout the UK even in severe winters (-15 to -10)
  • H6: hardy in all of UK and northern Europe (-20 to -15)
  • H7: hardy in the severest European continental climates (< -20)
H5

Colour & Scent

Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Ranunculaceae
Native to GB/Ireland
No
Foliage
Deciduous
Habit
Clump forming, Columnar upright
Potentially harmful
Humans/Pets: Harmful if eaten
Genus
Delphinium can be annuals, biennials or perennials, with palmately lobed basal leaves and showy bowl-shaped flowers in spikes, racemes or panicles
Name Status
Trade

How to Grow

Cultivation

Grow in a fertile, well-drained soil in full sun, providing support with canes or stakes as soon as foliage appears. Apply a balanced liquid every couple of weeks in the growing season. For the best flower spikes thin shoots when 7cm high, leaving a minimum of 2-3 shoots on young plants and 5-7 shoots on established plants. See staking perennials and delphinium cultivation for further advice

Propagation

Propagate by seed sown between 15-20°C in early spring

Suggested planting locations and garden types

  • City and courtyard gardens
  • Cottage and informal garden
  • Wildlife gardens
  • Cut flowers
  • Flower borders and beds

Pruning

Deadhead by cutting spent flower spikes back to small flowering side shoots. Cut down all growth to ground level after it has withered in autumn

Pests

May be susceptible to aphids, earwigs, delphinium leaf miner, delphinium moth caterpillars, slugs, snails and caterpillars

Diseases

May be susceptible to powdery mildews, delphinium black blotch, crown rot and viruses