Well I live in Texas and I grow mine outside year round. I've found for me they do best in 100% LFS. All the D. adelae I've had in a 50/50 peat sand mix have gone belly up!
In my case Jimscott they weren't playing opossum they were playing "middle of the road-feet in the air-Armadillo" [img]http://www.**********.com/iB_html/non-cgi/emoticons/new/smile_m_32.gif[/img]