Westfork,
Going to be a pretty bed!
Yes I would not put the greenhouse-grown semps directly into freezing conditions. A local friend had his damaged when we got down to 20F last week (a record!!). The plants already in the ground did fine.
I don't mix too many sedums in the semp beds as they tend to takeover too quickly. The Dazzler series are clumpers though and could be useful.
Kevin
