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Delphinium x cultorum 'Tall Black Knight'

Hardy Perennial

What is Hardy Perennial?
A plant that lives for more than two years.
Capable of withstanding outdoor winter temperatures down to -15C.

£3.59

78% (8 Reviews)

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Height Up to 150cm (59.1in)
Spread Up to 75cm (29.5in)

Hardy Perennial

cottage gardenscut flower garden

Full sun

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Sowing Months Flowering Months

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Description
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).

Useful Links:
How to sow flower seeds
Reasons to buy your seeds from Thompson & Morgan


1 packet (100 delphinium seeds) (25752)

Sowing
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.

More Info

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

Caution: Irritant to skin and eyes. Harmful if eaten.
Delivery

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 or potting on. Delivery times will be stated on the product page above, or in your order acknowledgement page and email.

Orders for packets of seed incur a delivery charge of £2.99.

Orders which include any other products will incur a delivery charge of £4.99.

Where an order includes both packets of seeds and other products, a maximum delivery charge of £6.99 will apply - regardless of the number of items ordered.

Large items may incur a higher delivery charge - this will be displayed in your shopping basket.

Please see our Delivery page for further details, and more information on different charges that may apply to certain destinations.

For more information on how we send your plants please visit our Helpful Guide on plant sizes.

Reviews

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