Agastache 'Black Adder'
Black Adder hyssop
The second fantastic Agastache given to us by Coen Jansen, Black Adder boasts numerous bottlebrush flowers of vivid blue from mid summer to frost on a compact, rounded plant. It has been hardy for us in the ground and in containers for 5 years now and has proven to be a reliable production plant as well. An early pinch keeps it more compact in pots.
Height30-36 Inches |
 |
Spread24-36 Inches |
Bloom Color
Blue VioletUSDA Hardiness Zone 6-9
Growing and Maintenance Tips
Grow in full sun and average to dry soils with average to good drainage. Definitely more tolerant of winter wetness than its pink cousins, but it may still succumb to wet clay soils in the winter.
