Ornamental Rowan A cultivar of the native Irish rowan or mountain ash, Sorbus aucuparia ‘Sheerwater Seedling’ is a vigorous, medium-sized to tall tree of upright, narrow habit, the crown widening with maturity. It is often planted as a street tree. Creamy-white flowers appear in April–May, reliably followed by large clusters of long-lasting red berries in late summer. The leaves are grey-green, turning yellow and gold in autumn. A very easy, fast-growing, reliable tree, good for pollinators and birds. Plant in full sun for the best shape. Holds the RHS Award of Garden Merit. Site: Tolerates exposureSoil: Any reasonably well drained soil, acid to neutral soils preferredPosition: Full sunSeason of Interest: Spring, late summer, autumnHardiness: Fully hardyHeight: 40’ (12m) Spread: 13-26’ (4-8m)