The delightful scabious 39butterfly blue39 produces large amounts of lavender45blue pincushion flowers on slender stems with clumps of grey45green lance45shaped foliage this easy to grow and maintain hardy perennial is ideal for rockeries and containers and its informal appearance makes it a great addition to cottage gardens too scabiosa atropurpurea 39butterfly blue39 is particularly long lasting blooming right through the summer and as the name suggests is a favourite