Jackie, yes, and even if you put the others outide they should be acclimated to the temps slowly. I have my echeverias outside with frost cloth over them at nite in high 30's only because they have been out since being in temps inside the garage in upper 40s at nite first to acclimate. Gasteria and haworthia can be good houseplants. They don't need any outdoor sun but can be put in shade. I find that the dark green colors are usually on succulent that grow well without being outside in the sun.
