Yes, that is so true the 4N plants are slow growers, larger in size more rigid leaf structures, larger blooms but fewer in numbers than the "normal" ones. Yes, most triploids are sterile.Originally posted by Sue
There is no way to tell whether a plant is 2n, 3n, or 4n, or whatever.
I have, however, heard that it is generally true that 4n plants grow more slowly, but tend to be larger in plant size, as well as often in bloom size and fragrance, while 3n plants tend to grow rather quickly and largely, with bigger brighter smellier blooms. But triploids are mules.
I'll start putting together some FAQ files. Including one on ploidy, for those who aren't sure what this question was, not to mention the answer.