Mainau Island on Lake Constance is famous for its flowers and deservedly so, for it hosts many different floral shows all year round. 'Let the sun into your heart' is the title of one such exhibition, which runs until 9 April 2012 and is themed on the colours of the sun and the scents of spring. The kaleidoscope of colours in this most beautiful of seasons heightens anticipation for the warm summer months ahead.