Mexican Petunia rooted cuttings?
I was lucky enough to root a cutting of a "Mexican Petunia" (Something I'd never seen before)...now, what do I do with it in order to get it to live until next spring when I can plant it outside? I don't know much about this plant (except that I fell in love with its blooms!)...is it an annual, perennial? Right now, the rooted cutting is still sitting in a jar of water, which I'm afraid will rot if it continues. I'd love any info on this plant and what to do with this cutting anyone could offer. Thanks!