Hello Patti welcome to ATP!!
Its exciting to have someone growing semps in "different" locations so we can see how they do! I live in Seattle so pretty much the opposite of your weather (in all ways actually since we're in winter now :nodding:)
I'm thinking you'll want to plant your named varieties in part shade rather than full sunshine (in winter they'd be fine but in summer it may be too hot for them)
The tectorum type that you have in your rockery tends to be the easiest to grow, and will put up with a lot!! (which is why it is probably the most common that you'll see in gardens)
Your soil sounds perfect for semps!! They don't seem to need compost, and they love sand and crushed granite, so you're good there!! Can't wait to see what you do with them!
