Centranthus ruber red

Centrathus ruber ‘Red’

Common name: Red valerian, Jupiter’s beard, Spur valerian
Botanical name: Centrathus ruber
Family: Caprifoliaceae

Origin: Mediterranean region and southwestern Europe

Description

A hardy, long-flowering perennial with upright stems reaching 40 to 90 cm tall. It produces dense clusters of bright crimson-red flowers that attract bees and butterflies. Its grey-green foliage gives a soft look and it thrives in dry, sunny conditions.

History & Fun Fact

Centrathus ruber has been grown for centuries in Mediterranean gardens due to its resilience and long blooming season. It's commonly found on old walls, rocky slopes, and roadsides, which makes it a favourite for low-maintenance gardens. Despite its name, it is not the same as Valeriana officinalis, the medicinal valerian.

Care

• Light: Full sun. It tolerates partial shade but blooms best with plenty of sunlight.

• Soil: Light, well-drained soil, even poor or stony ground. Avoid heavy or waterlogged soil.

• Climate: Drought-tolerant and resistant to mild frosts once established.

• Blooming period: Late spring to early autumn, especially when deadheaded.

• Ideal for: Mediterranean gardens, gravel beds, rockeries, large pots, walls, and low-maintenance landscapes.

Watering

Moderate watering. Once established, it is drought-tolerant. Water only when the soil is completely dry. Overwatering should be avoided, as it may cause root rot.

Pruning

Deadhead spent flower clusters after the main bloom to encourage a second flush. In late autumn or early winter, cut back the plant to maintain a compact, tidy shape.