Rick, not from a big box. Most likely one of two independent nurseries. It's not being pushed with fertilizer...shares a lean bed with yarrow, salvia & lavender. It's been there since at least 2016, possibly a year earlier, and I've thinned it a few times. I think you're right that it's likely a hybrid. It's really not a big deal, but since it has performed so well I wanted to put it in the database; that's what started my quest for ID. This year I plan to move it...I might divide and relocate into two different sun exposures, just to hedge my bets. Thanks for your help
