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Mountain Ash
Mountain Ash botanical plate
Field guide plate · click to zoom

Mountain Ash

Sorbus aucuparia
In the United States: Naturalized · also called rowan, European rowan

Honeybees visit Sorbus aucuparia for its abundant pollen and moderate nectar from dense clusters of small white flowers that bloom in late spring in cool temperate climates. Peak bloom supports early-season foraging and brood rearing, with flowers attracting a variety of pollinators. The deciduous tree thrives in moist, acidic, well-drained soils and may require pruning to maintain shape and promote flowering, though it can be susceptible to fire blight in humid conditions.

Nectarmedium
Pollenmedium
Bloom (US) May–June
Duration~2 weeks
TypePerennial
Sunfull
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