forest hanley park reclamation rural staffordshire stoke-on-trent trees undergrowth urban vegetation coast coastline colors colours conservation conserve conserving cultivating cultivation dune-flora dunes environment environmental flora grass grasses green greenery growing growth natural nature ocean ocean edge planting plants protect protection reclaim replanting rough salt-resistant sand sand-dunes scrub access-denied barrier fence fencing limited limited-entry protective sandy background beach coastal communication contrast contrasting direction directive foliage light sign signs tides bridge business cagl