Id-Code: AA 236
Family: Alliaceae, Liliaceae
Origin: Romania to Northwestern China and Siberia
Special Features: Thick spherical umbels of dozens of greenish-yellow flowers
Colour: Greenish-yellow
Natural Flowering Period: June - August
Winter Hardiness Zones: Z4-8
Growth Habit: Upright
Foliage: Narrow blue-green leaves
Height with Flowers: 60 cm (24'')
Spacing between Plants: 45 cm (18'')
Soil Requirements: Well-drained soils (tolerant of clay soils), pH 5.8 - 7.2
Location: Full sun
Use: Plant in the rock garden, troughs, along pathways or the border with Campanula portenschlagiana, Heuchera 'Dale's Strain' and Penstemon x mexicale 'Sunburst Ruby'
Specialities: An interesting alternative to the many purple flowering selections

Cultural Tips:
Grams per 1000 Seeds: 2,941
Seeds per Gram: 340
Seeding Recommendation: 8 g / 1000 plants
Sowing Rate: 2-3 seeds per cell
Plug tray recommended size(s): 72, 128 or open flats
Germination: These seeds germinate rapidly depending on species and origin. If germination does not occur after 3-4 weeks a cooling period of 2-4 weeks is recommended.

Scheduling:
Best Sowing Dates: November - March
Sowing to Germination: 4 - 6 weeks
Germination to Transplant: 4 - 6 weeks
Transplanting to Salable Plant: 6 - 8 weeks
Cutting-Back at Transplanting: Not necessary

Growing On:
Container Size(s): 1 plug per 8/9 cm (3 1/2''); 1-2 plugs per 11/12 cm (4 1/2'')
Vernalization: A prudent recommendation would be to provide 6-12 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: Light (100-150 ppm)