Soil should be well-drained in winter. MUST be ACIDIC! Do NOT plant in full sun. Will go dormant in summer so take care to mark where plants are planted.
Growing Japanese Star Primrose from seed
Requires light. Do not cover seed.
By our calculations*, you should look at sowing Japanese Star Primrose about 105 days before your last frost date .
How long does Japanese Star Primrose take to grow?
These estimates for how long Japanese Star Primrose takes to sprout, grow and harvest are from real observations from real gardeners, right around the world.
Days to Germination How long does it take Japanese Star Primrose to germinate?
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Days to Transplant How long until I can plant out Japanese Star Primrose?
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Days to Maturity How long until Japanese Star Primrose is ready for harvest / bloom?
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Total Growing Days How long does it take to grow Japanese Star Primrose?