18"dia. urn filled to 6 1/2" below the rim with potting soil, 24" round of tempered glass (sold as a tabletop) on the rim. The mini-greenhouse doubles as a table for a lightly shaded patio. To keep condensation from building up, remove the glass tabletop every few days for an hour or so. Once the succulents are rooted (four weeks), transfer them to pots or garden beds. (Maybe rubber bumpers on the rim of the urn would hold the glass up enough for air circulation to prevent condensation.)
