Jim Waddick mentioned the tiny sinningias as good terrarium candidates. I've had both the white and purple forms of S. pusilla growing in a little glass dome for over 20 years now, and they are remarkably tough. The planting medium consists of granite grit and potting mix (probably Fafard 52, but I can't be sure), roughly 1"deep. I try to water it before it gets completely dry, but if I forget all that happens is that the plants go dormant and wait for better times. A few times a year, at best, I give a liquid feed with Miracle-Gro or similar. Once every few years I remove everything - usually after I've managed to send them all into dormancy - and replace the mix. The plants do self-sow periodically, though not to excess. The dome sits in a south-facing window, so internal temperatures must get up over 100F in summer, and there is effectively no ventilation save for the rare times when I remove the dome to water or clean the algae off the inside of the dome. All in all, they are amazingly forgiving little plants. Ellen Ellen Hornig Seneca Hill Perennials 3712 County Route 57 Oswego NY 13126 USA http://www.senecahillperennials.com/ ----- Original Message ----- From: "James Waddick" <jwaddick@kc.rr.com> To: "Pacific Bulb Society" <pbs@lists.ibiblio.org> Sent: Sunday, December 27, 2009 3:04 PM Subject: Re: [pbs] terrariums > Dear Dennis, > I think this sounds like a perfect set for a ground cover of > micro and mini sinningias. These are tiny bulbous relatives of > Gloxinias and come in a variety of sizes and colors of flowers. The > smallest are very small. Once established they can self sow. Try > http://littlecountryvillage.com/Cottage-Gardening/… >