Boy, do I feel dumb.
In a moment of weakness, I bought some Agastache "Blue Fortune." I loved the way it looked and the fact that butterflies just love it. I didn't know it's not hardy to our zone. I've seen it listed as zone 5 and zone 6. So, has anyone had any luck overwintering this plant? I didn't pay a lot of money for it, thank goodness, but I feel dumb for violating my own rule--if it ain't zone 4 winter hardy, don't even think about planting it.