Belfast Botanic Gardens Tree Archive

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This is one of a series of short articles about trees in the Belfast Botanic Gardens compiled by the Friends group. The tree tag number relates to the small aluminium discs, usually fixed on the tree trunk, 2 to 3m above ground level.
Ostrya virginiana
Eastern hop-hornbeam (American hophornbeam, ironwood)

54 deg 34.879N
5 deg 55.761W

These elegant trees have recently been planted (spring 2007) in a avenue from the Embankment towards the Botanic Gardens gate as part of the refurbishments following the building work for the Queen's University Physical Education Centre extension.

The Eastern hop hornbeam (hophornbeam in USA) belongs to the birch family (Betulaceae) and has catkins in spring before the leaves open, that look similar to birch or alder catkins (as in photos taken in April). These are the male flowers; the female flowers are like those of the hop (Humulus lupulus) - hence the name. The seeds are produced in late summer in whitish papery sack-like structures. The trees will eventually reach about 10m height and make an impressive avenue.

Ostrya virginiana in Belfast Botanic Gardens Ostrya virginiana planted 2007
Avenue of Ostrya virginiana in Belfast Botanic Gardens Young Ostrya virginiana
Ostrya virginiana catkins Ostrya virginiana catkins
Catkins of Ostrya virginiana Catkins of Ostrya virginiana

Photos taken in Belfast Botanic Gardens in 2007. Copyright: Friends of Belfast Botanic Gardens.

Click here to view the rest of the tree archive