Thanks Bob, I border 7b and 8a so it is quite hot sometimes and on the other hand it does a flip and gets quite cold. I like to stick with the zone 7 plants so when we get a deep freeze I won't loose plants. The back yard is full sun and everything bakes! Almost all my hostas are sun tolerant and they are in part sun, thats all they can take. The coneflowers and butterfly bushes love it and I try to stick to the drought tolerant plants, it's just easier. Living in the city, you get those city water bills.
As for the heuchera, I will look them all up, before I plant them, on the Terra nova site.
susan