England english forest Great Britain green hide house oak Quercus spring Sussex tree treehouse wood allium background bloom cultivar cultivated flower mauve onion ornamental petal spiky spiny texture cowslips natural nature Primula veris verge wild yellow blue bluebell Endymion fresh non-scriptum cloud countryside February field landscape meadow peace rural sky autumn fall sunlight trees woodland banks canal peaceful river summer tranquil water waterway agriculture architecture buildings farm farmyard granary railings shed silo storehouse crop silhouette winter blossom hedgerows lane narrow road track