Great Design Plant: Curl-Leaf Mountain Mahogany, a Tough Evergreen for Western Gardens

This native of the U.S. West has a strong landscape presence. Evergreen foliage cloaks a large, upright to loosely rounded form perfect as a winter accent, screen, or hedge in dry, cold climates. A nice alternative — especially in smaller landscapes — to common pines and spruce. Versatile with little to no maintenance, curl-leaf mountain mahogany is an unsung, underused plant great for modern landscapes.

Plant Profile

• Botanical Name: Cercocarpus ledifolius
• Common Name: Curl-leaf mountain mahogany
• Origin: Native to the western United States
• Hardiness: -40°F (USDA zones 3–8)
• Elevation Range: 3,000–9,000 feet
• Water: Low
• Light: Full sun
• Mature Size: 10–25 feet tall, 6–10 feet wide
• Benefits: Dense evergreen foliage, attractive feather-like seeds; long-lived, low maintenance, drought tolerant; tolerates poor soils and wind
• When to Plant: Spring
• Seasonal Interest: Very small yellowish flowers in spring; seed plumes late summer through fall; evergreen foliage

Distinguishing Traits

Leathery, narrow leaves are ½ to 1 inch long with margins that curl under, especially during extreme drought. Foliage is evergreen — dark and lustrous above, white and fuzzy below — contrasting nicely with pale gray to white bark.

The curled, feathery seed plumes are characteristic of the genus; shown here is the closely related but deciduous common mountain mahogany (Cercocarpus montanus, zones 3–8) — note the broader, serrated leaf.

How to Use It

Ideal as a single-specimen accent or massed as a screen. Add to a shrub border with xeric companions like Siberian spirea (Sibiraea laevigata, zones 4–8), fernbush (Chamaebatiaria millefolium, zones 4–8), golden currant (Ribes aureum, zones 2–7), and dwarf fragrant sumac (Rhus aromatica 'Gro-Low', zones 3–8).

Dense branching occurs to the ground; leave natural, shear as a hedge (shown), or prune to create a small tree form.

Planting Notes

Prefers full sun but tolerates half-day shade. Select a well-drained site with gravelly, rocky, or sandy-clay soil mimicking native habitat. Once established, goes without supplemental water except in prolonged hot, dry periods.

Note: Curl-leaf mountain mahogany is slow growing.