Flowers: April – May; catkins
Fruits: 3-angled nuts within a spiny casing
Twigs & bark: Twigs purplish/brown; bark grey and smooth
Woodland and hedges, base-rich to acidic soils
Widespread and common, widely planted
Records submitted to Data Centre in 2021
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Thought to be native and a late coloniser in the last ice-age in parts of Britain but not in Ireland