African blue lilies are an extremely durable variety requiring little maintenance agapanthus 39sweet surprise39 is a compact plant that produces umbels of pale blue flowers which when fully open feature a wonderful 39star39 with a unique navy stripe along the centre of each petal these blooms are borne from late june to august on rigid upright stems that ascend from clusters of linear semi45evergreen foliage which makes perfect ground cover agapanthus 39sweet surprise3