Almost absurdly, geophytic *Euphorbia* of the E. decaryi group do very well with constantly damp soil and moderate light - think "African violet." Closed terrariums with very high humidity tend to cause fungus issues, but they grow lushly when given the above-mentioned conditions and adequate ventilation. *E. decaryi*, *E. cylidrifolia* and *E. francoisii* are all good choices. If I may make another suggestion, the vastly underrated genus of terrestrial bromeliads, *Cryptanthus*, will work under the same conditions. On Sat, Dec 26, 2009 at 11:24 PM, Dennis Kramb <dkramb@badbear.com> wrote: > So I have a 65g hex aquarium & stand that I want to set up as a > terrarium. I've never made one before, and I figure that I've got two > options. > > 1) Transplant all my various potted cacti into the terrarium and use it > is a dry terrarium. > > 2) Get new plants that prefer a humid environment, and take advantage of > the closed lid, etc, and enjoy something new! > > Probably I'll do #2 and so I thought I'd pick your brains to see if any > geophytes make good terrarium specimens. I'd love to try irises, but I > suspect they need temperature fluctuations throughout the year to grow & > bloom properly??? I'm guessing. > > Another option would be to experiment with native plants. Like maybe > try the native Opuntia humifusa (which I grow outdoors just fine) or > Manfreda virginica, or something. But somehow that doesn't appeal to me > as much as growing something tropical. > > I hope this stirs up some good conversation! > > Dennis in Cincinnati, Ohio, USA > > _______________________________________________ > pbs mailing list > pbs@lists.ibiblio.org > http://pacificbulbsociety.org/list.php > http://pacificbulbsociety.org/pbswiki/ >