Id-Code: PA 574
Family: Rosaceae
Origin: Species can be found in cool sub-alpine meadows from Afghanistan to southwestern China with primulas and ligularias.
Special Features: Deep scarlet saucers and luxurious grey-green leaves
History: Introduced by JELITTO PERENNIAL SEEDS in 2009. Plant parts have been used traditionally for treatment of colds.
Colour: Deep scarlet
Natural Flowering Period: June - August
Winter Hardiness Zones: Z5-8
Growth Habit: Dense, compact
Foliage: 3 segmented, grey green leaflets with margins precisely toothed
Height with Flowers: 30 cm (12'')
Spacing between Plants: 30 cm (12'')
Soil Requirements: Evenly moist soils, pH 5.5 - 6.8
Location: Full sun or partial shade
Use: Lovely for mixed containers, edging, the rock garden or the front of the border with Alchemilla sericata 'Gold Strike', Aruncus 'Whirlwind' and Ligularia 'Midnight Lady'
Specialities: Outstanding foliage plant
Cultural Tips:
Scheduling:
Growing On:
Grams per 1000 Seeds: 0,476
Seeds per Gram: 2100
Seeding Recommendation: 1 g / 1000 plants
Sowing Rate: 2 seeds per cell
Plug tray recommended size(s): 128, 288
Germination: Rapidly germinating, keep seed in constant moisture (not wet) with temperatures of about +20°C [68°F]. Do not cover the seed but tightly press into the earth. Keep in cooler conditions after germination occurs. The germination might be slower and more irregular. This poses no problems.
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 once to keep more compact
Container Size(s): 1 plug per 8/9 cm (3 1/2''); 1-2 plugs per 11/12 cm (4 1/2'')
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)