Id-Code: HA 029
Family: Asteraceae, Compositae
Origin: Oregon and California/USA
Special Features: Bright yellow blossoms with a distinctive black-brown cone. A shorter and more compact habit than many Helenium varieties, early flowering
History: Introduced by Jelitto in 2005
Colour: Deep yellow with prominent black-brown cone
Natural Flowering Period: June - August
Winter Hardiness Zones: Z4-8
Growth Habit: Upright
Foliage: Medium-green lance-shaped leaves
Height with Flower: 60 cm (24'')
Spacing between Plants: 60 cm (24'')
Soil Requirement: Well-drained soils; 5.8 - 7.2 pH
Location: Full sun
Use: Plant in the border with Echinacea 'Magnus', Heuchera villosa var. macrorrhizza, Stokesia laevis 'Träumerei', and Stipa tenuissima
Specialities: Good cut flower candidate. Easy-to-grow

Cultural Tips:
Grams per 1000 seeds: 0,606
Seeds per Gram: 1650
Seeding Recommendation: 2 g / 1000 plants
Sowing Rate: 3 seeds per cell
Plug tray recommended size(s): 128 or 288
Germination: Rapidly germinating, keep seed in constant moisture (not wet) with temperatures of about +20°C [68°F]. Seeds must be covered thinly. Keep in cooler conditions after germination occurs. The germination might be slower and more irregular. This poses no problems.

Scheduling:
Best Sowing Dates: Anytime
Sowing to Germination: 2 - 3 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

Growing On:
Container Size(s): 1-2 plugs per 11/12 cm (4 1/2''); 2-3 plugs per 15 cm (6'')
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)