Delphinium 'Black Knight'

Plant Delphinium out in sheltered sunny borders in moist well drained soil. Incorporate plenty of well rotted manure or garden compost into the soil prior to planting. Water well to settle the soil.

Feed and water regularly until plants are established. When shoots reach a height of 30cm, the tall stems will require staking with garden canes for support. Remove old delphinium flowers as soon as they fade to encourage another flush to be produced later in the season. In autumn, remove old foliage and apply a mulch of well rotted manure to the base of the plant. Lift and divide in autumn every third year to maintain their vigour.

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.