Wow those are beautiful. Love them! We have a vacation home on the east side of Washington and there are rattle snakes there. No gardening for me there, I hate snakes, really afraid of them. Here on the west side of the state just garden snakes.
What a wonderful creative way to garden. Come over to the sempervivum forum. Some of us might be able to help with the semps. Love you Heuchera, so healthy! Thanks for sharing your pictures.