Are you tempted by the beautiful globe45shaped blooms of african blue lillies but concerned that they will struggle in the changeable british climate perhaps the 39northern star39 variety of agapanthus is the answer to your prayers33 not only does it produce an abundance of deep blue flower umbels in mid to late summer but it is among the toughest plants of its kind this hardy agapanthus cultivar has attractive strap45shaped leaves and the foliage retains its green colour with