ROYAL MOUNTAIN ASH

Plant Name: Royal Mountain Ash
Scientific Name: Sorbus aucuparia ‘Michred’ — Cardinal Royal Mountain Ash, European Mountain Ash, Rowan
Mature Height: 30–35 ft
Mature Spread: 15–20 ft
Growth Rate: Moderate (1–2 ft/year when young)
Sun: Full sun to partial shade
Water: Moderate; 3–5 gal per watering while establishing, 2–3 times/week in hot, dry weather; 5–10 gal per watering once established during dry periods
Foliage: Dark green, compound leaves with 9–15 toothed leaflets; deciduous
Fall Color: Rust-red to reddish-orange
Flower Color: White
Bloom Time: Mid-to-late spring
Fruit: Bright red, berry-like fruits in dense clusters; attractive to birds
Hardiness Zones: 2–6 (−50°F to 0°F)
Features: Upright, narrow oval crown; showy red fruit; attractive fall foliage; suitable as a specimen or ornamental shade tree
Additional Facts: Royal Mountain Ash typically refers to the ‘Cardinal Royal’ cultivar, Sorbus aucuparia ‘Michred’. It prefers cool climates, moist well-drained soil, and consistent moisture. Hot, dry summers and alkaline soils can cause stress, so it may struggle in the Prescott area.