Quick Facts

• Mature size: Approx. 1000–1500mm high x 1000–1200mm wide

• Position: Full sun

• Foliage: Grey-green, velvety leaves

• Flowering: Late spring to summer

• Flower colour: Soft yellow, tubular flowers in layered whorls

• Climate tolerance: Heat, frost, and drought tolerant

• Water needs: Low once established

• Maintenance: Low

Why You’ll Love it

Phlomis russeliana, commonly known as Jerusalem Sage, is a striking, architectural perennial shrub valued for its layered whorls of soft yellow flowers that appear from late spring into summer. The velvety grey-green foliage provides a bold textural backdrop, making it an excellent partner for ornamental grasses and drought-tolerant perennials. Highly adaptable and easy to grow, it brings structure, colour, and movement to sunny borders, naturalistic plantings, and Mediterranean-style gardens. Its long-lasting flowers also attract bees and pollinators, enhancing garden biodiversity.

Planting & Care Tips

• Plant in full sun for best flowering and foliage development

• Prefers well-drained soil; tolerates poor, sandy, or rocky soils

• Water during establishment, then sparingly once established

• Remove spent flower stems to maintain appearance and encourage neat growth

• Cut back in late winter or early spring to refresh foliage and encourage strong new growth

• Ideal for Mediterranean-style borders, cottage gardens, and pollinator-friendly plantings