This african blue lily won39t leave you feeling blue with its spectacular umbels of violet flowers patterned with a darker stripe what39s more the agapanthus 39jacaranda39 is one of the first hardy perennials of its kind to bloom so will add a dramatic splash of colour to sunny borders from june onwards even when surrounded by other plants it doesn39t have to fight for attention its thick vertical stems ensure that its flowers rise above the competition throughout july and