Specialty Gardening: Info about miniature Gardenias?, 1 by RainGazer

RainGazer wrote:
Hi all!
I bought three of these little guys yesterday. Tag says Gardenia jasminoides (Mini Gardenia) Height 18" Space 18" Keep soil moist, shade to part shade. (I thought they needed more sun than that.)
Now, I killed a perfectly love gardenia topiary tree two years ago, and I'd rather not kill these three. I'd like to pot them up all together, but I'm not sure about what size pot I'd need to use. I'm potting rather than planting, because I'm sure they'll need to come inside during the winter.
Anyone willing to help me with pot size and general care instructions so these guys can flourish? I would also love to know how to propagate them from cuttings. Gotta share the wealth, ya know! LOL
Thanks so much!