Id-Code: OA 044
Family: Onagraceae
Origin: Eastern USA
Special Features: Abundant blooms, first year flowering; golden saucer-shaped blossoms opening during the day, reddish autumn foliage
History: Introduced by JELITTO PERENNIAL SEEDS in 2006
Colour: Orange in bud, bright golden cup-shaped blossoms, lightly scented
Natural Flowering Period: June - August
Winter Hardiness Zones: Z4-8
Growth Habit: Upright
Foliage: Dark green with red fall color. Stem and leaf undersides are covered with distinct whitish hairs
Height with Flower: 40 cm (16'')
Spacing between Plants: 40 cm (16'')
Soil Requirement: Well-drained garden soils, pH 6.2 - 7.2
Location: Full sun
Use: Ideal for the rock garden or border combined with Coreopsis 'Elfin Gold', Penstemon 'Sunburst Ruby', and Stachys 'Silky Fleece'
Specialities: Good cut flower. More tolerant of dry conditions than its relatives.
Cultural Tips:
Scheduling:
Growing On:
Grams per 1000 Seeds: 0,159
Seeds per Gram: 6300
Seeding Recommendation: 1 g / 1000 plants
Sowing Rate: 6 seeds per cell
Plug tray recommended size(s): 72 or 128
Germination: Rapidly germinating, keep seed in constant moisture (not wet) with temperatures of about + 20°C (68°F). Do not cover the seeds, but tightly press into the earth. Keep in cooler conditions after germination occurs
Best Sowing Dates: November - March
Sowing to Germination: 2 - 4 weeks
Germination to Transplant: 4 - 8 weeks
Transplanting to Salable Plant: 6 - 10 weeks
Cutting-Back at Transplanting: Cut-back 1-2 times: once at transplanting, once again 4 weeks later to keep more compact
Container Size(s): 1 plug per 8/9 cm (3 1/2''); 1 plug per 11/12 cm (4 1/2'')
Vernalization: There is no current research on vernalization but a prudent recommendation for any perennial would be 6-12 weeks (a few might need 15 weeks!) at an average daily temperature of 40°F (5°C). Exposure to cold may not be necessary for flowering but might improve quality.
Forcing: An obvious place to experiment - following vernalization - would be raising daytime temperatures to 60° - 65°F (15° - 17°C). Provide 16 hours of continuous lighting. During the short days of winter, provide a night interruption lighting of 4 hours between 10:00 p.m. and 2:00 a.m.
Fertilization: Medium (150-200 ppm)