After 5 hours sitting in water, I place them in soil, mist them and cover them like @Nate G. do. The next morning, they almost fully open, I discover that the small one is a duo and the big one is cluster of 4 plants, a quartet!!! I only buy 2 plants from John but it turn out to be 6 plants 🤣 BUT there's one problem, I see some white hair-like fiber under some leaf, MOLD!!! I bet it is because of the rain water I use to mist them ( since I have no distilled water and tap water in my state is full of mineral stuff) and the dead leaf's sponge like structure that hold water causing mold to grow. I go to Lowe's to buy some limestone and put them in the soil and also remove some dead leaves to prevent mold. Ordered grow light on Amazon but it won't arrive til next week, so I use aquarium led light for now. I also found another plant in the garage that my lil sis bought before, it look so pale brown and I don't think it is alive, but I will give it a try and see if the core is somehow alive. Since I don't have a tent to keep the humidity high, I will use a small aquarium as alternative and barely cover them to increase the humidity. (To be Continue)

Gary, Tropical species are probably not all that much different than the temperate species in ease of propagation. However they are in two different sections: most temperate species in Tetragonostachys and almost all tropical species in Stachygynandrum. The basic difference is that the "Tetras" can handle drought and have leaves that spiral around the stem while the "Stachy" really need moisture and humidity to do well and have flat stems with leaves ranked along the stem edges. If well grown both types can prove to be spreading. While I am currently growing one species of Stachygynandrum native to North America, S. apoda, outside with the Tetragonostachys species, I would not expect most os the Stachygytnandrum species to do well outside in North America except in areas where humidity is constant snd sufficient to allow growth. Some are naturalized in the southeast USA with S. kraussiana surviving as dumped plants in two reported locations in northern California. I believe there are only 2 species of the Tetragonostachys in Florida and both are probably endangered to nearly extinct. I would hope an effort to master cultivation of these species is being undertaken and if not should be. If you examine the images the plant subject D has rhizoids evident along the stem. If the propgation is healthy and has several of these rhizoids evident then if the media is acceptable the plants should root readily. I guess I need to find the time to work up some reports on the Stachygynandrum species I am growing beside what I have already posted at Photobucket. Here is a link that might be useful: To access the 3 Stachygynandrum species use the menu on the left side under Albums

Right, "free moisture" is the same way I began to think about this until I realized that although 'available' or 'free' water in the medium is the concept I was after, the moment you try to nail down what you mean by 'free moisture', you really must define what you mean by 'available'. It turns out that it is all about picking the pressure a root needs to basically pump (or suck) water out of the medium. This is so easy to confuse (at least for me). But it makes a lot more sense on the second go round when you realize the media work best frequently when they are not saturated and draining water (that is where the word 'free moisture' is probably better applied), but rather sucking it up themselves (at that same pressure just like the roots have to overcome from the irrigation source.) I like your first idea, but at the same time I'm looking for a quick method that will not depend on the plants since it is really just a pressure or suction measurement characteristic of the specific medium that should be doable in some way without waiting. Of course putting the plants in is the final goal, but with evaporation and transpiration and plant size it would get mixed up with the plant when what I'm hoping is just for a medium specification which could be very useful, especially when providing the preferred root pressure environment for the plants, rather than depending on chance to keep it there. I've had an idea to make a fake root pressure test to answer myself: Put in an appropriate piece of dry paper in the control and in the test, recently drained media. Leave it in for say 1 minute, then remove and weigh water gain. Making the reproducable contact would be a little challenging, but I think not hard to work out. It really is a great thing to think about doing IMO. http://cdi.uvm.edu/collections/item/mapleimage036a

Glad to hear from someone who likes Selaginellas. There are three native species in your part of the country. Click on the name to eflora treatment or USDA image This is the only member of the Stachygynandrum section: Selaginella apoda I currently grow apoda outside and I consider it to be a weed species as I have found it coming up in other moss pots! I cannot believe that it can handle our winters as it looks so delicate. There are two members of the Tetragonostachys section in the Carolinas: Selaginella rupestris The USDA did not have an image so I am using my own. I am currently growing this in two different pots. It is hanging on. In one the selaginella was really a nice population but it got overran by mosses and liverworts-reason why I changed my culture to only spraying or watering in the evening daily (maybe depending on weather). But a few days ago I made images of all the pots of selaginella on the bench and noticed in the image of this particular pot that rupestris had survived and there were strobili poking out of the mass of mosses and liverworts!! (Will share images later.) AND the other species is: Selaginella tortipila image of S. tortipila This species is unknown to me. It only occurs in the Carolinas down into Georgia but apparently is fairly common and is found in rocky places. All three of these species should be fairly easy to grow in pots.