Stately, elegant standard in English cottage gardens. Mounds of dark green glossy foliage have spikes of showy, spurred flowers. Blooms late spring to early summer. Great as cut flowers.
The most amazing of all Delphiniums. They require a little more effort as you really should stake them for a spectacular display. The 4′ to 7′ tall stalks bear 3″” double flowers. They are mildew resistant.
This is a mixture of other varieties of the Pacific Giants Series. Removing faded spikes at the base will encourage repeat blooming in fall.
Winchester Gardens generally stocks this item.
Dark Blue, Light Blue, Blue, White
Plant in spring, spacing plants 1 to 3 feet apart, depending on the variety. Prepare the garden bed by using a garden fork or tiller to loosen the soil to a depth of 12 to 15 inches, then mix in a 2- to 4-inch layer of compost. Dig a hole twice the diameter of the pot the plant is in. Carefully remove the plant from its container and place it in the hole so the top of the root ball is level with the soil surface. Carefully fill in around the root ball and firm the soil gently. Water thoroughly.
Apply a thin layer of compost each spring, followed by a 2-inch layer of mulch to retain moisture and control weeds. Water plants during the summer if rainfall is less than 1 inch per week. Soil should never dry out. Stake tall varieties to prevent hollow flower stalks from snapping in the wind, and deadhead after flowering to encourage rebloom. After the first killing frost, cut stems back to an inch or two above soil line. Divide plants every three to four years as new growth begins in the spring, lifting plants and dividing them into clumps.
Joe Pye weed – Lofty Joe pye weed fills in the back of the border after delphiniums finish blooming, so it makes great backdrop for them.
Hyssop – Anise hyssop also makes a good backdrop for delphiniums. Its purple-blue blooms form after delphinium is done blooming, and the delphinium foliage covers the bare base of anise hyssop.
Salvia – Purple perennial salvia coordinates beautifully, and its spires echo the towers of delphinium blooms, but on a smaller scale.