A High Country Gardens 2011 introduction. Hybrid of agastache 'Desert Sunrise' and agastache foeniculatum.
Besides the 3 pics above, there are 10 more pics, 2 Landscape (Multi-plant) Photos and 4 comments in the database.
Hyssop (Agastache 'Blue Blazes')
I planted 3 of these plants in 2011 and looking at the pics I took (shown on the database), it bloomed til at least through 2015. I don't remember when I didn't have any more BB. One or two of the plants didn't survive through 2015.