Minis should propogate pretty easily. If
they're patented you're not supposed to
(it should be on the tag).
Probably a good idea to make more cuttings
than you want in case of losses. I don't use
the tenting method, just use a good potting
soil and keep the cutting damp (spray bottle)
until I start getting leaves.
The American Rose Society web site
has an article on propagation, as well as
most intro books on roses, like the
Ortho series I rely on so much.
http://www.ars.org
Check out the Articles section.
Gail
near San Antonio TX Zone 8