When Criss and I were last in England we went to Wisley. The Achillea trials were being held in Portsmouth Field next to M25. The roar of the traffic was so awful that we nearly turned back before we got to the trials. Achillea ‘Credo’, raised by the great German nurseryman, Ernst Pagels, was one of the best plants there. It has creamy lemon flat heads of flowers for a long period over grey green foliage. We use it in our double flower borders. 100cm x 60cm.