RED VALERIAN; Centranthus Ruber
- Light: Prefers full sun (at least 6 hours of direct sunlight daily), though it tolerates light partial shade.
- Soil: Thrives in poor, rocky, sandy, or chalky well-drained soils. It does not do well in overly rich or wet soils.
- Hardiness Zones: Generally adapts well to USDA zones 3 through 9.
- Water: Highly drought-tolerant once established; requires minimal watering. [1, 2, 3, 4, 5, 6]
- Size: Grows upright, reaching roughly 2 to 3 feet (24–36 inches) tall and 1.5 to 2 feet wide.
- Bloom Time: Flowers profusely from late spring through early fall, especially if deadheaded.
- Wildlife: Highly attractive to bees, butterflies, and pollinators, while remaining largely resistant to deer and rabbits. [1, 2, 3, 4, 5]
- Pruning: Deadhead spent flower clusters to encourage a second round of blooms and to prevent aggressive self-seeding. Cut back hard near ground level either after flowering or in early spring. [1, 2, 3]
- Propagation: Easily grown from seeds sown indoors or directly outdoors in spring, or via root division of established clumps in spring or autumn. [1]
- Note on Invasiveness: Because it self-seeds freely and thrives in rocky crevices or walls, it can naturalize and become weedy in certain coastal or mild regions; check local guidelines regarding its invasive potential
