About

Mountain Ash ‘Joseph Rock’

The Mountain Ash ‘Joseph Rock’ (Sorbus aucuparia) is a striking deciduous tree native to the mountainous regions of Europe and Asia. Known for its distinctive clusters of bright orange to red berries and pinnate leaves.
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The Appearance

A deciduous tree with a rounded canopy, featuring compound leaves with serrated edges. It is adorned with striking clusters of orange to red berries and has smooth, light-grey bark that peels in strips.


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The Produce

The tree produces clusters of small, bright orange-red berries in late summer and autumn, which attract birds and wildlife.


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The Flowers

Clusters of white, fragrant flowers bloom in late spring or early summer.


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The Leaves

Its compound leaves are pinnate, with 11-15 leaflets that are dark green in summer, turning vibrant shades of red, orange, and yellow in autumn.


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The Bark

The bark is smooth and light grey when young, becoming rougher and more fissured with age.


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The Habitat

It thrives in well-drained soils and can tolerate a range of soil types, including acidic and alkaline soils. The tree prefers full sun to partial shade and is commonly found in woodlands, forest edges, and mountainous regions.


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The Ecology

The Mountain Ash ‘Joseph Rock’ provides vital habitat and food for various wildlife species. Its berries are a crucial food source for birds such as thrushes, waxwings, and woodpeckers.


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The Culture

This cultivar is noted for its hardiness and ornamental value, making it a popular choice for gardens and landscape designs.


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Fun Facts

Its name “Mountain Ash” is somewhat misleading as it is not related to the ash tree but is actually a member of the rose family.

Explore Deeper With The Interactive Map

Unleash your inner explorer with our interactive map of the Arboretum. This live map labels the location of every tree in the arboretum, providing detailed information on each one.

Dive into the fascinating stories behind each tree, learn about their origins, characteristics, and unique attributes. The interactive map is your perfect companion for an engaging and educational adventure. Discover the rich tapestry of nature with just a few clicks!

Interactive Map

Arboretum Index