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Japanese Primrose is a perennial herbaceous plant known for its upright flower stems and tiered seasonal blooms. It grows well in cool to temperate climates and is commonly cultivated in home gardens, borders, woodland settings, and near water features. The plant prefers partial shade, fertile moist well drained soil, and consistent watering, making it suitable for ornamental and herbal garden cultivation in sheltered outdoor environments.
Features
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Perennial herbaceous plant suitable for garden borders and woodland planting
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Upright flowering stems with tiered seasonal blooms
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Adaptable to moist garden beds and shaded areas
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Prefers partial shade with fertile well drained soil
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Suitable for cool to temperate climate conditions
Specifications
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Scientific name: Primula japonica
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Common name (US): Japanese Primrose
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Seed type / variety: Open pollinated herbal plant seed
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Growth habit: Upright perennial herbaceous plant
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USDA zones: 4 to 8
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Planting season: Spring or early fall in suitable climates
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Growing season: Spring through early summer flowering period
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Sowing season: February to April in temperate regions; September to October in mild climates
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Germination time and conditions: About 14 to 30 days in cool moist well drained soil
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Sunlight requirements: Partial shade to filtered sunlight
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Soil requirements: Fertile moist well drained loamy soil preferred
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Watering needs: Moderate to regular watering with consistent moisture
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Mature plant size: Approximately 1 to 2 feet height with about 1 foot spread
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Plant spacing: About 10 to 15 inches between plants
