Id-Code: AA 550
Family: Scophulariaceae
Origin: Central Pyrenees
Colour: White
Natural Flowering Period: June - July
Winter Hardiness Zones: Z6-8
Growth Habit: Dwarf mounds
Foliage: Small oblanceolate, hairy (silky) and evergreen
Height with Flower: 15 cm (6'')
Spacing between Plants: 15 cm (6'')
Soil Requirement: Dry protected sites, pH 5.8 - 6.8
Location: Full sun
Use: Plant together in containers with Anthyllis vulneriana var. coccinea, Helichrysum bellidioides and Thymus serpyllum 'Magic Carpet'
Specialities: Beautiful, small species that is ideally suited for dry conditions
Cultural Tips:
Grams per 1000 seeds: 0,063
Seeds per Gram: 16000
Seeding Recommendation: 0,25 g / 1000 plants
Sowing Rate: 4 seeds per cell
Plug tray recommended size(s): 128, 288
Germination: The sowing must be kept warm (about +18 to 22°C) [about 64 to 72°F] and moist for the first 2-4 weeks. After this period the sowing must be kept at a cold temperature (between -4 and +4°C) [between 25 and 39°F] for another 4-6 weeks. Colder temperatures of -5°C [23°F] are only advantageous for most species of the Ranunculus family. It is not so important if the temperature is higher or lower during the cooling period, but the cooling period has to be prolonged because the synthesis of the germination inducer, hormonlike acid, slows down or comes to a standstill.
It is beneficial to cover the sowing with snow during the cooling-period. The temperature below it usually keeps in the optimum range of -4 to 0°C [25 to 32°F]. The sowing is kept moist, and the melting snow helps to destroy the shell, which is advantageous for the germinating seedling. After this cooling-period the sowing may not be immediately exposed to high temperatures. The most effective temperatures are between +5 to 12°C [41 to 54°F], even if germination has started. The best location for this sowing, even in March, April and May, is the open field, the cold frame or a cold greenhouse.
Scheduling:
Growing On:
Best Sowing Dates: November - March
Sowing to Germination: 8 - 10 weeks
Germination to Transplant: 4 - 8 weeks
Transplanting to Salable Plant: 6 - 10 weeks
Cutting-Back at Transplanting: Not necessary
Container Size(s): 1 plug per 8/9 cm (3 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: 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. 6-8 weeks to flower.
Fertilization: Light (100-150 ppm)