Cistus salviifolius aka Sage Leaved Cistus

Cistus salviifolius, or sage-leaved rock rose, is an evergreen shrub. It belongs to the rock rose family, Cistaceae. Its native range spans southern central Europe and the Mediterranean. It extends east as far as northwestern Iran. Wild plants grow in dry woods, thickets and on banks. They occur on both acid ground and limestone. This shrub is not native to Britain or Ireland.

The plant grows fast and forms a low, spreading bush. RHS lists garden heights of 1.6–3.3 feet [0.5–1 metre]. Its listed spread is 0.3–1.6 feet [0.1–0.5 metres]. Yet the same account describes stems reaching 2.6 feet [0.8 metres] across. Plants reach their mature size within two to five years. Dark green leaves range from oval to lance-shaped. The leaves and young stems give off scent when touched.

Red buds open into white, shallow, cup-shaped flowers. Bright yellow stamens form a bold cluster at each flower's centre. Chicago Botanic Garden records bloom from May to June. RHS places flowering in summer, while PFAF names late spring. The flowers draw butterflies, and Chicago lists resistance to deer. Its spreading form suits ground cover in mild British gardens. It also fits borders, beds, coastal gardens and courtyard spaces. RHS includes it among plants for patios and containers.

Give this shrub full sun and shelter from harsh exposure. It grows well in poor soil that drains freely. Good drainage matters most during the wetter winter months. RHS lists chalk, loam and sand as suitable soils. It accepts acid, neutral and alkaline conditions. Older plants on chalk may develop yellow leaves through chlorosis. RHS rates its UK hardiness H4. Chicago gives USDA zones 8–10. RHS equates H4 with winter lows of 14–23°F [−10 to −5°C].

Pests seldom cause trouble, but honey fungus may attack it. Pinch young plants after bloom to help them branch. Avoid hard pruning, as the shrub responds poorly to it. Replace old plants that have become sparse and leggy. Propagate by seed or by cuttings at the stated seasons. Take softwood cuttings in spring; take semi-ripe cuttings from midsummer into early autumn. PFAF records dried leaves as a substitute mixed into marjoram. It lists no known medicinal uses or hazards.