deciduous England english farm field footpath Great Britain landscape nature path rural Sussex track trail trees winter woodland amber autumn brown color colour fall forest green oak Quercus russet shade standard Surrey trunks yellow English oak Fagaceae leisure parkland plant Quercus robur September tree woody plant regeneration renewal replanting saplings supports Terrestrial plant tubes dappled Hampshire light natural New Forest shadow sunlight wood city evergreen London park Regent's Park space urban blue bluebells bulb flower Hyacinthoides spring wild background Betula birch texture white bridleway hill slope