If your borders are looking tired and you get the feeling everything has peaked a few weeks ago here is some intense colour that can continue well on into Autumn. The ultra violet blue of Ceretostigma is an incredible sight and almost too much for the eyes. As the cobalt summer sky is fading to that ethereal misty sky of autumn this flower is like a song of blue, as if all blue of summer skies have been caught in its petals and are bursting forth. It is an excellent one to two foot ground cover and is the only plant that will stand up to the brightness of dahlias at this time of year. It likes a sunny spot but will reluctantly flower ever in dappled shade though it can get straggly. It likes moist free draining soil. It originally came from Asia.