Where can I buy hardy (outdoor) succulents in Philadelphia Pa?
Meadowbrook Farms carries a wide selection of succulents. The staff there can assist you with identifying those that are hardy. It is a division of PHS and is located at 1633 Washington Lane, Meadowbrook PA 19046. 215 887 5900.
Sempervivum (hen and chilcks) are usually hardy.
You might also try City Planter, 814 N 4th St, Philadelphia, PA 19123