cloud Devon England field green hill landscape lush meadow nature panorama sky spring tree view woodland bushes english flowers garden Great Britain oak pink Quercus shrubs trees blue calm horizontal lake plant reflection river serene summer sunny water wood background Corylus hazel leaf leaves natural sunlight texture comfrey herb medicinal Sussex Symphytum officinale forest hilltop boundary drystone farm north northern wall Acer sempervirens Cretan fresh Greece Greek maple shrub trilobate crosswort Cruciata laevipes plants wild yellow