I'm delighted that your garden is in bloom. Good to see Magic Carrousel. I tried it in NJ and was surprised to find that it succumbed to black spot in its first season. But I did like the blooms. Gotta try it here.
One year I allowed a tradescantia in one corner of the garden to set seed. The next year every corner of the garden was filled with it. Then the third year it disappeared altogether. I was never sure what to think of it.