Hello, I've been introducing aubreittas here over the last couple of years. They are perinnial so will come back next year. I think the trick is to cut them back hard after they have flowered. I'm still a bit shy of doing this but the ones I cut back the hardest last year, gave me the best show this.........some of them are still flowering.
This year I'm going to delibratley leave some seed heads on a few to see if they self seed.