Our landscaper brought these to add to the agapanthus already planted...but I don't think they are agapanthus. The blossom is different and the "corn-stalk" appearance of where the flower emerges from the plant is very different. Any ID help or further advice would be greatly appreciated. Thanks.
Looks good for Agapanthus. So many different ones. Quote from Roger Phillips and Martyn Rix, Book Perennials Vol 2. "Leaves deciduous up to 1 inch wide, forming a short leek -like stalk." Hope this helps.