Id-Code: AA 310
Family: Malvaceae
Origin: Ukraine and southern Russia
Special Features: Exceptional clear yellow blossoms and more disease resistance
Colour: Clear yellow
Natural Flowering Period: May - September
Winter Hardiness Zones: Z3-9
Growth Habit: Upright
Foliage: Rounded and lobed
Height with Flowers: 200 cm (78'')
Spacing between Plants: 90 cm (36'')
Soil Requirements: Any well-drained soils, pH 5.8 - 6.8
Location: Full sun
Use: Plant together in the border with Stokesia 'Omega Skyrocket', Amsonia hubrichtii and Thalictrum rochebrunianum
Specialities: A species whose popularity has grown tremendously in the last few years.
Also available as JELITTO GOLD NUGGET SEED® (AG 310)
Cultural Tips:
Grams per 1000 seeds: 5,263
Seeds per Gram: 190
Seeding Recommendation: 20 g / 1000 plants
Sowing Rate: 3-4 seeds per cell
Plug tray recommended size(s): 72, 128
Germination: These perennial seeds germinate very irregularly over a long period. Lower temperatures of less than +5°C [41°F] are very effective. Seed trays should not be discarded prematurely. Constant moisture must be maintained. Do not leave in direct sunlight.
Scheduling:
Growing On:
Best Sowing Dates: November - March
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 once to keep more compact
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)
