Hi everyone--Today at my in-laws house I picked up a broken stem of pink-flowering sedum off their patio so I could root it at home. The stem is dried up at the base and the flower is wilted but it has a bunch of tiny leaflets along the stem with root hairs coming out. I've never rooted these before but it looks easy.

I was just wondering if it would be better to lay the whole stem on the ground/potting mix (less likely to just rot that way?) or cut it into smaller sections? Also, should I root it indoors since it's getting colder, or will it do just as well out in the yard? My MIL the gardener wasn't home, or I would have just asked her while I was there.