Blooming from as early as june agapanthus 39jacaranda39 is a useful early flowering variety its showy umbels of blue flowers are beautifully striped with a darker blue adding a height to herbaceous borders where the sturdy upright stems will make a lovely focal point this african blue lily has strap45like evergreen foliage forming tidy clumps and planted in large swathes makes excellent ground cover a reliable hardy perennial it enjoys a sunny spot coping in most soils height