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|Distinction:||Award of Garden Merit (A.G.M.) from the Royal Horticultural Society.|
|Special Features:||Winter hardy! Also for winter growing.|
|Historical:||The Latin primus means first, indicating this important genus as being one of the first to flower in spring.|
|Natural Flowering Period:||April - May|
|Winter Hardiness Zones:||Z5 - Z8|
|Height with Flowers:||30 cm|
|Soil Requirements:||moist / average / humus rich, fertile|
|Usage:||for the rock garden / suitable for cutting / flowering pot plant|
|Grams per 1000 seeds:||1 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.