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Larkspur 'Gentian Blue'

Delphinium grandiflorum | Delphinium chinense, Siberian Larkspur

Impressive annual Delphinium

A clear, fresh Gentian blue

A stunning colour which is breathtaking

This product is produced and supplied in association with Thompson & Morgan

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Description Sowing More Info Delivery Reviews
A clear, fresh Gentian blue which is perfect for bedding, borders and containers. This impressive annual Delphinium, also known as Siberian Larkspur, boasts a stunning colour which is breathtaking and essential for any garden.

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Reasons to buy your seeds from Thompson & Morgan


1 packet (100 larkspur seeds) (38349)

Sow April to May or September to October. Sow outdoors where they are to flower. Prepare the ground well and rake to a fine tilth before sowing. Sow 3mm (1/8in) deep, in rows 30cm (12in) apart.Alternatively, sow in late summer in 7.5cm (3in) pots in a cool greenhouse and then overwinter plants in cool, well lit conditions. Plant out the following spring after all risk of frost, 30cm (12in) apart in full sun.

When large enough to handle, thin out seedlings to 23cm (9in) apart.

Prefers a light, well drained soil in full sun.

Caution: Irritant to skin and eyes. 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 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 £6.99.

Where an order includes both packets of seeds and other products, a maximum delivery charge of £7.99 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.

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