Helianthus ‘Double Quick’
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Collapse ▲Trial: Annual
Year Trialed: 2004
Year of Trial: First (from 2004 report)
Good Qualities
Really nice double (3); Large flowers (2); Foliage seemed less prone to fungal disease – remained disease free all through flowering period; It is an OK sunflower; Seems to all come into bloom at once (over 2 to 3 days) as opposed to say ‘Sunbright’ which is 10-14 days, nice height; Customers were astonished at size, seems fast to get such a large flower; Strong stems, great color, nice ‘Teddy Bear’ alternative; Earlier than ‘Giant Sungold’, also a single stem, which is great; ‘Double Quick’ was superb! bright warm golden color and fuzzy blossoms, harvested about 70 days after direct seeding (Zone 6/7).
Problems
Not as fast as Pro-cut series; At opening, centers are somewhat squeezed and angularly folded up (awkward looking) when fully opened, produces a somewhat shaggy appearance because petals are large and coarse-toothed, cool fall weather-it gets rust; Lost much of crop to early frost (Zone 4); Would not grow in hoophouse again, stems were soft and plants tended to fall over; Heads too big or weak to hold upright in spite of decent size, strength week/stems, seemed to be more prone to spotting on flowers and leaves than most.
Postharvest
Water only, no cooler.
Trial Data
| 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 | 2.0 | 38.5 | 4.5 | 3.3 | 4.0 | 4.4 | 4.6 | 98 | 9.1 |
| Range of Responses | 1-10 | 12-52 | 4-5 | 2-4 | 3-5 | 2-5 | 4-5 | 18-144 | 2-11 |
¹1 to 5 scale, with 5 being the best. Market ratings are based on sales to wholesalers, retailers, or final consumers direct.
Supplier
SeedSense Ltd.
The Tithe Barn, Mundesley Rd.
Trunch, Norfolk HR28 0QB, England
Comments
Similar to ‘Giant Sungold’ (2) but ‘Double Quick’ was better; Similar to ‘DoubleShine’ (2); Not so different from any regular sunflower such as ‘Sunbright’; Similar to ‘Starburst Aura’; Impressive size of blooms overcame shaggy factor for consumers, good mixed with other sunflowers; After the main flower blooms, secondary blooms form very close to the main stem, an interesting look; Not a great year for spot diseases on petals and leaves of stems in general, may have better possibilities if pinched early.