it's so rare i get to give any advice or share any information. i'm usually the one asking!!! so i'm thrilled to help you on your sedum question!! well.....half of your question, anyway! i do know from expierence that sedum is one of the easiets plants
to root. 2 years ago my mother had a bounty of sedum she didn't mind sharing with me, to get me started. i was blown away when all she did was cut several stalks from the plant
and told me to just stick them in the ground and they will root........so i did as told (i'm such a good girl that way, lol)
and did nothing else for them. i watered them as i watered everything else, thats it! this year they have tripled.......just from one stalk, amazing. so, snip away and just stick them anywhere you want them! hope this helped!