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Herbaceous Perennial

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

delphinium [Delgenius Kingsley]

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

Synonyms

Delphinium 'Et Dlp 807'

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Ultimate height

0.5–1 metres

Time to ultimate height

2–5 years

Ultimate spread

0.5–1 metres

Chalk

Loam

Sand

Moisture

Moist but well–drained

pH

Alkaline, Neutral

	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

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)

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

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