Thompson & Morgan

Important delivery notice
The products on this site are only delivered to UK addresses. If you require delivery to another country please visit one of our other sites below.

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Delphinium x cultorum 'Tall Black Knight'

Hardy Perennial

Tall, robust, candle-like flower spikes packing with attractive, deep blue blooms, each complemented by a striking large black bee in the centre. A stunning addition to any border. Height: 120-150cm (4-5ft).

Ideal For:
cottage gardens, cut flower garden
Flowering Period:
June, July
Sowing Months:
February, March, April, May, June, September, October
Position:
full sun
    • 1 packet (100 seeds)

    •  
    • Despatch: Within 3 days
    • £2.99
Sow February to June or September to October. Sow seed on the surface of lightly firmed, moist seed compost in pots or trays. Cover with a fine sprinkling of compost or vermiculite. Keep at a temperature of between 10-15C (50-59F). After sowing, do not exclude light as this helps germination. Keep the surface of the compost moist but not waterlogged; germination can take 21-40 days. When large enough to handle, transplant seedlings into 7.5cm (3in) pots or trays.

Gradually acclimatise plants to cooler conditions for a few weeks before planting out after all risk of frost,60cm (24in) apart.

For best results, provide a sunny, sheltered site and a deep, fertile, well-drained soil.

Caution: harmful if eaten

Seeds and garden supplies will normally be delivered within the time period stated against each product as detailed above. Plants, bulbs, corms, tubers, shrubs, trees, potatoes etc are delivered at the appropriate time for planting and will be stated on the product page or in your order acknowledgement page and email.


Orders for packets of seed incur a P&P charge of £1.95.
Orders which include any other products will incur a P&P charge of £4.95.
Where an order includes both packets of seeds and other products a maximum P&P charge of £6.90 will apply - regardless of the number of items ordered.


Please see our Delivery / P&P page for further details and details of any surcharges that may apply to certain destinations.

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