campion coastal flora flowers Great Britain island maritima natural nature Pembrokeshire Silene uniflora Skomer spring united kingdom wales welsh white wild bluebells clearing crataegus England english hawthorn Hyacinthoides margin shrubs Stellaria stichwort Sussex trees woodland aquatic bright cultivar flowerhead garden golden leaf leaves lily nymphaea pads petals pink pond showy stamens summer water waterlily yellow bushes Calluna Frensham Common heath heather heathland landscape ling purple Surrey bush cloud farm fence field green meadow peace sky South Downs track valley bulbs cluster early February Galanthus group hanging pendulant perennials plants snowdrops blue coastline sea ship tanker background cape plumbago climbers hedge light blue plumbago auriculata plumbago. fast-growing sky blue textures woody stemmed Aster Buddleia butterflies Ceratostigma Cimicifuga Clethra Cotoneaster Hebe Helichrysum Hemp agrimony insect ivy marigold Michaelmas Daisy mint nettles Sedum Vanessa atalanta verbena