Delphinium 'Cobalt Dreams'
Photo Courtesy of Walters Gardens, Inc.
| ||Series Name: NEW MILLENNIUM™ Delphiniums|
Common Name: Delphinium-Hybrid Bee
Breeder Terry Dowdeswell has been working hard to develop a new strain of Delphiniums that have consistently deep, true cobalt blue flowers and now he’s done it!
This new selection produces strong, tall spires tightly packed with cobalt blue florets with brightly contrasting white central bees. They draw your attention from quite a distance and add terrific architectural presence to the garden in early summer and fall. Uniform color and form ensure a stunning display whether planted singly or en masse.
The English hybrid type of delphiniums are bred by Dowdeswell's Delphiniums in New Zealand and are hand crossed to produce the highest quality seed. These F1 hybrids have excellent form, strong stems, and a vigorous growth habit. They were selected for their improved tolerance of heat and humidity, while retaining their cold hardiness.
Intro Year: 2013
Breeder: Terry Dowdeswell
Introducer: Dowdeswell's Delphiniums
Origin: Not Native to North America
Sun or Shade?:
Full sun (> 6 hrs. direct sun)
Part shade (4-6 hrs. direct sun)
Wet or dry?:
Average water needs
Want to see wings?:
Need critter resistant plants?:
How fast should it grow?:
When should it bloom?:
How's your soil?:
Sweet or Sour Soil?:
Neutral Soil (pH = 7.0)
Alkaline Soil (pH > 7.0)
What's your garden style?:
Delphiniums thrive in the cooler climates of the north country, though they will grow as far south as zone 7. The New Millenium hybrids, however, tend to be more tolerant of heat and humidity. They grow best in rich, well-drained soil with a basic pH. If your soil is naturally acidic, adding lime will help to provide these conditions. They are also heavy feeders. The addition of compost or manure to the soil as well the use of granular fertilizer will result in healthier, stronger plants.
Delphiniums can be grown in full sun or partial shade, though full sun may help to prevent powdery mildew. When planting, be sure to set the crown at or above soil level to avoid rot. Since their stems are hollow, taller varieties of Delphiniums should be staked to prevent damage from wind and rain. These new hybrids tend to be longer lived than their short-lived cousins but may be propagated from basal cuttings.