Large, graceful spikes filled with 5 cm (2") double florets.
Large, graceful spikes filled with 5 cm (2") double florets burst out into colour at the top of these sturdy plants. A well balanced blend of solids and bi-colours. Foliage is mildew resistant and the tall plants are good for the background in the perennial border. Garden height of 150 cm (5'). Cut back plants after flowering is complete to encourage a second bloom for later in the summer. Hardy to Zone 4.
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How To Grow
350 seeds/gram. Easy to grow, adaptable to most soils, trouble free and tolerant of heat and drought. Start seed 8 to 10 weeks early indoors. Pre-chill seed for 24 hours prior to sowing. Germinate at 18 C (65 F) then grow on under lights at cooler temperatures of 15-18 C (60-65 F) before hardening off and transplanting to a sunny site.
Blooming Season Begins
Start Indoors or Sow Direct in Fall
Days to Emergence
10 to 20
Tall %28120 to 150 cm%29%2848%22 to 60%22%29
Degree of Difficulty
Prior Experience Beneficial
Delphinium X elatum ( X cultorum)
Back of the border.
Stately accent plant.
Pollinator plant - a bumble bee favourite!
Some perennial plants produce seed that is viable but dormant. This means that while the seed has all the internal structures and nutrients required to germinate, the seed coat is so hard, water cannot pass through it and initiate germination. When seed is in this state, it is known as being dormant. Seed dormancy is a naturally selected for trait that protects the seed of many plants allowing them to safely overwinter and then be ready to sprout in more favourable conditions in spring.
The remedy to naturally breaking seed dormancy is typically the passing of time. In particular, seed overwintering outside and experiencing the natural freeze thaw cycles that occur in late fall, winter and early spring. To artificially break seed dormancy, sow the seed in a soil-less mix, water than chill in a refrigerator. This dormancy breaking process is called stratification.