Hi Deb - I use pumice mixed with some soil and sand - I don't measure just mix up some (cheaper than cactus mix and probably better draining) I put mine out April 15th and take them in early Oct. but I think I'm a little warmer here in Seattle, so you have to go by your frost predictions. Actually I haven't put my plants back outside yet, but I'm doing that tomorrow probably. Also I have usually NOT taken the time to acclimate them to full sun thinking "there aloe's they'll be fine" and they end up sunburnt, so this year I really am going to take my time, giving them several hours of sun and then shade for a couple of weeks. Let us know what you do!
Cheers hope you are well
