Japanese Primrose - Primula japonica - Millers Crimson

DESCRIPTION: Native to Japan. Belongs to the Primulaceae family.  Short-lived perennial forming a rosette of oblong to spatulated, irregularly toothed, light green leaves.  Stems bear 1 to 6 tiered whorls composed of 7 to 11 salverform, crimson flowers.   

Height: 60 cm (24 in.)

Flowering: June-July


Zone: 4-5

Exposition: semi-shaded location but can tolerate full sun as long as the soil remains constantly moist.

Soil: thrives in moist and humus-rich soils.

Germination temperature: 18-22ºC (64-72ºF)

Required time: 21 to 28 days

Special care: Sow indoors between February 1st and March 15th.  Cover with a thin layer of soil.  Substrate must be kept constantly moist but not wet.  Place trays at temperatures between 18 and 22ºC (64-72ºF) for 2 to 4 weeks, then at –4 to 4ºC (25 to 39ºF) for another 4 to 6 weeks.  After this cold period, do not exposed the trays to high temperatures immediately.  The most effective temperatures are between 5 and 12ºC (41 and 53ºC).  Cover the trays with a plastic film to keep the soil moist. 

$ 6.50
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