On top of the helm is the crest which consists of a crowned castle and mountain ash tree.
Sorbus | Sorbus aucuparia | Sorbus vexans | Sorbus subcuneata | Sorbus torminalis | ''Sorbus'' subgenus ''Sorbus'' | Sorbus eminens | Sorbus admonitor |
The larvae feed on a wide variety of plants, including Rhamnus frangula, Hedera helix, Ligustrum, Ilex aquifolium, Cornus sanguinea and Sorbus aucuparia.
The larvae feed various plants and trees, including Betula (including Betula verrucosa), Myrica gale, Carex, Salix, Populus tremula, Rubus idaeus, Sorbus aucuparia, Vicia cracca, Rhamnus frangula, Lysimachia vulgaris, Vaccinium myrtillus and Galium verum.
The larvae feed on a wide range of plants, including Betula species (Betula verrucosa, Betula pubescens, Betula nana), Alnus incana, Salix caprea, Salix pentandra, Salix aurita, Salix cinerea, Salix phylicifolia, Populus tremula, Philadelphus coronarius, Rubus idaeus, Filipendula ulmaria, Sorbus aucuparia, Vaccinium uliginosum and Ledum palustre.
In the parks and other green spaces of the borough, trees such as ash, white cedar, cypress, fig and Indian laurel, various scrubs and grasses can be found.