Belfast Botanic Gardens Tree Archive

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This series of short articles about trees in the Belfast Botanic Gardens is compiled by members of the Friends group and Gardens staff. We aim to build up to a comprehensive archive of trees in Belfast Botanic Gardens. Each article illustrates a tree growing in Belfast Botanic Gardens together with information from a range of sources. Where possible we will give the tree tag number - these are the small aluminium discs, usually fixed on the tree trunk, 2 to 3m above ground level.
Tsuga canadensis
Eastern hemlock, Canadian hemlock

Tag 206
54 deg 34.995N
5 deg 55.997W

The Eastern hemlocks are frequent forest trees of eastern north America, from Ontario to Alabama. The Belfast Botanic Gardens specimen is a young tree on the main path close to the Tropical Ravine. The eastern hemlock is very similar to and hard to distinguish from the western hemlock Tsuga heterophylla; both have hairs on the twigs with the western species described as long and fluffy and the eastern species as short. However the most reliable feature seems to be the row of short, inverted, leaves on the upper surface of the eastern hemlock twigs (see photo below). The cones of the two species are quite similar.

Tsuga canadensis in Belfast Botanic Gardens Tsuga canadensis foliage
Eastern Hemlock tree in Belfast Botanic gardens Eastern Hemlock twig showing variable leaf length and distinctive upside-down leaves along top of branch (arrowed)
Tsuga canadensis cones Tsuga canadensis pollen cones
Mature cones of eastern hemlock Pollen cones of eastern hemlock

Photos taken in Belfast Botanic Gardens in 2017. Copyright: Friends of Belfast Botanic Gardens.

Click here to view the rest of the tree archive