Centranthus Ruber Seeds produce a clump-forming perennial plant known for its upright stems, aromatic foliage, and clusters of vibrant red flowers. This hardy plant thrives in full sun with well-drained soil and is suitable for garden borders, rock gardens, and pollinator-friendly landscapes. Once established, Red Valerian attracts bees and butterflies and provides long-lasting color and ornamental interest throughout the growing season.
Features
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Clump-forming perennial growth habit
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Produces clusters of vibrant red flowers
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Aromatic, narrow foliage
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Suitable for garden borders, rock gardens, and pollinator-friendly landscapes
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Thrives in full sun with well-drained soil
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Attracts pollinators and adds seasonal color
Specifications
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Scientific name: Centranthus ruber
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Common name (US): Red Valerian
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Seed type / variety: Perennial flowering variety
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Growth habit: Clump-forming perennial
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USDA zones: 5 to 9
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Planting season: Spring
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Growing season: Late spring through summer
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Sowing Season: Spring
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Sowing season months: March to May
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Germination time and conditions: 10 to 21 days at 65 to 75 F in moist, well-drained soil
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Sunlight requirements: Full sun to partial shade
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Soil requirements: Well-drained, moderately fertile soil
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Watering needs: Moderate; drought-tolerant once established
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Mature plant size: 18 to 36 inches tall; 12 to 18 inches spread
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Plant spacing: 12 to 18 inches apart