I just got done setting up an experiemental propogating system downstairs. There are cups filled a layer of perlite with a later of vermiculite over that. Each layer is about an inch thick. The cups (which have holes on the bottom) are set in a tray with water in the bottom, about 1/2 inch high. I put down 2 african violet leaves, 2 strawberry begonia babies (without roots so far — right off the plant) and a rex begonia leaf. Then a lid is put on the whole thing to raise humidity and stop water from evaporating so fast. It should be interesting to see if I have anything rooting.