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|Special Features:||Winter hardy, early flowering. Very vigorous, best suited for pot production. Compact, decorative foliage. Flower and foliage provide an impressive contrast. Full sun in cool areas is accepted with sufficient irrigation.|
|Historical:||The Latin primus means first, indicating this important genus as being one of the first to flower in spring.|
|Flower Colour:||blue shades|
|Natural Flowering Period:||February - May|
|Winter Hardiness Zones:||Z5 - Z8|
|Foliage:||oval, basal, distinct venation, dark green to violet|
|Height with Flowers:||10 cm|
|Soil Requirements:||average / humus rich, fertile|
|Usage:||for the rock garden / flowering pot plant|
|Grams per 1000 seeds:||0.58824 Gram|
|Seeds per Gram
(does not correspond to the number of plants!):
|Gram to get 1000 plants
(if sown directly into pots etc. you will need a larger quantity):
(16) See 15 with the exception of germination being slower and more irregular. This poses no problems.
(15) Rapidly germinating, keep seed in constant moisture (not wet) with temperatures of about +20°C [68°F]. Seeds must be covered thinly. Do not cover very small seeds, but tightly press into the earth. Keep in cooler conditions after germination occurs.