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NC State Extension

Delphinium ‘Candle Blue Shades’

Trial Started: 2005
Year of Trial: First (from 2005 report)

Good Qualities

Great color (4); Tall stems; Soft blue, turgid stems; Seeded in February for June bloom; Fast, uniform color, reasonable stem size; Good first year bloom, lasting well into early October (Zone 2); Stem length and strength.

Problems

Some stems were only long enough for market bouquets; Sheds petals, stalks thinner, more gaps between blooms on the stalk; Okay – I just can’t grow delphinium from seed, it just withers away in the plug tray; The delphiniums just do better for us when sown and planted in the fall but it was a little early and too hot when we did this; Root disease wiped out this variety by early September in field and tunnel.

Comments

Similar to ‘Guardian’ (2); Similar to ‘Aurora’ far superior; I probably won’t grow again until I have a high tunnel in place; General comments on trial (Zone 5): Plants were transplanted unto shallow beds covered with plastic mulch and with trickle irrigation, there were 2 replications in a high tunnel, and 2 outside, plants were arranged in a 12 x 12 inch spacing in 3 rows on each bed. Plant death due to root disease was the dominant feature of this trial – With the exception of the bellamosum types, all other varieties were essentially dead by early September, the unusually warm growing season may have contributed to this mortality.

Trial Data

Delphinium ‘Candle Blue Shades’
Yield (stems/plant) Stem Length (inches) Market Appreciation Rating¹ Repeat Again Rating¹ Ease of Cultivation Rating¹ Average Spacing (in2) Average Postharvest Life (days)
Wholesale Retail Consumer
Average 2.7 25.6 4.3 3.7 3.8 3.1 3.4 132 6.1
Range of Responses 1-6 16-38 4-5 3-4 3-4 1-5 2-5 36-324 5-7

¹1 to 5 scale, with 5 being the best. Market ratings are based on sales to wholesalers, retailers, or final consumers direct.

Supplier

Sakata Seed America
18095 Serene Drive
Morgan Hill, CA 95037

Page Last Updated: 5 years ago
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