Id-Code: AA 029
Family: Asteraceae, Compositae
Origin: Species has a widespread circumboreal distribution
Special Features: A diverse mixture with darker hues from red to pink to apricot coloured flowers, including yellow and light yellow, beige tones and a few whites.
History: Achillea millefolium 'Colorado' originates in the same parents than 'Summer Pastels'. However the colours of 'Colorado' are well-balanced.
Introduced by JELITTO PERENNIAL SEEDS in 1993
Colour: A diverse mixture of colours
Natural Flowering Period: May - October
Winter Hardiness Zones: Z2-9
Growth Habit: Clump forming, upright
Foliage: Fern-like
Height with Flower: 60 cm (24'')
Spacing between Plants: 40 cm (16'')
Soil Requirement: Any well-drained soils, pH 5.5 - 6.8
Location: Full sun to partial shade
Use: Plant together with Alcea, Allium sphaerocepahlum, Dianthus plumarius fl. pl. 'Pink Tones' and Lychnis chalcedonica 'Carnea'
Specialities: Outstanding as a cut-flower, flowers 4 months after sowing
Cultural Tips:
Grams per 1000 seeds: 0,143
Seeds per Gram: 7000
Seeding Recommendation: 1 g / 1000 plants
Sowing Rate: 6-7 seeds per cell
Plug tray recommended size(s): 128, 288
Germination: Rapidly germinating (2 to 3 weeks), 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.
Scheduling:
Growing On:
Best Sowing Dates: Anytime
Sowing to Germination: 2 - 3 weeks
Germination to Transplant: 4 - 6 weeks
Transplanting to Salable Plant: 6 - 8 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): 1-2 plugs per 11/12 cm (4 1/2''); 2-3 plugs per 15 cm (6'')
Vernalization: No vernalization required for flowering in the first year.
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: Medium (150-200 ppm)
