apple apples autumn branches crop England english fruit Great Britain green harvest laden Malus nature red September Sussex tree beach cave cavern cliff coastline Cornish cornwall hole low tide natural rock sand shore Caryophyllaceae Devon flowers little petals small spring Stellaria stichwort tiny verge white wild catkins Corylus dangle early hang hazel pendulant shake suspended tassels boulders coast evening horizon peace sea seashore stones tide water wave coastal crassulaceae English stonecrop Pembrokeshire plant Sedum anglicum summer united kingdom wales welsh banks current danger flood flow muddy river spate surge torrent trees turbulent winter