Agastache Black Adder
Agastache foeniculum 'Black Adder'
Agastache Black Adder produces numerous bottle-brush flowers of vivid Violet-blue from mid summer to frost on a compact, rounded plant. It has been hardy for us in the ground reliably winter after winter.
Black Adder is a long-blooming selection for the middle to back of the border, featuring long wands of vivid blue-violet flowers bracts. Foliage is dark green and licorice-scented. Attractive to butterflies and hummingbirds. Flowers are excellent for cutting. Pinch in June to keep plants compact if desired.