Scabiosa 'Black Knight' (Pincushion Flower)<LOVE this! There's also a dark garnet colored one that's fabulous!
Veronicastrum virginicum ‘Album’ may be useful to the landscape architect in an informal prairie scheme or as part of a mixed herbaceous planting scheme.
Clematis 'Black Prince' - Deep purple clematis flowers, among the darkest varieties.
Wonderful on my back porch: pure simplicity with a colorful punch - tall blue glazed pot with creeping jenny ( Lysimachia nummularia "Aurea) trailing down the sides
Buy hydrangea Hydrangea paniculata Confetti = (PBR): Delivery by Crocus - Gardening Pacer