Regent, Royal and Carlton Terrace Gardens lasted until 2011, when it was felled due to disease. The following tree species were recorded in the gardens at the end of the 20th century: ash ("Fraxinus excelsior"), beech, black poplar ("Populus nigra"), cherry ("Prunus avium"), common lime ("Tilia × europaea"), English elm ("Ulmus minor" 'Atinia'), hawthorn ("Crataegus monogyna"), holly, horse chestnut ("Aesculus hippocastanum"), laburnum ("Laburnum anagyroides"), Norway maple ("Acer platanoides"), oak ("Quercus robur"), rowan ("Sorbus aucuparia"), silver birch ("Betula pendula"), small leafed lime ("Tilia cordata"), sweet chestnut ("Castanea sativa"), sycamore ("Acer pseudoplatanus"), tulip tree ("Liriodendron tulipifera"), whitebeam ("Sorbus aria"), white poplar ("Populus alba"), and wych elm ("Ulmus glabra").
Sorbus aucuparia larger forest trees. In Central Europe it often grows in association with red elderberry, goat willow, Eurasian aspen, and silver birch. The plant is highly flammable and tends not to accumulate plant litter. Other species of the genus "Sorbus" easily hybridize with "S. aucuparia" and hybrid speciation can result; hybrids include "Sorbus × hybrida", a small tree with oval serrated leaves and 2 to 3 pairs of leaflets, which is a hybrid with "Sorbus × intermedia", and "Sorbus thuringiaca", a medium-size tree with elongated leaves and 1 to 3 pairs of leaflets that are sometimes fused at the central vein,