Perennials having long blooming seasons, Gardening

Aquilegia chrysantha (Golden Columbine) Campanula carpatica (Carpathian Harebell) Delphinium, if cut back Iris, fall blooming varieties Lathyrus latifolius (Perennial Pea) Lychnis Coronaria (Dusty Miller) Scabiosa graminifolia (Pincushion or ...