The first ones I tried didn't do anything. The replacements worked well. No more difficult than other Gloriosa varieties. In retrospect, they may not have had as many blooms as suberba or greenii. They were pretty small tubers. When repotting Gloriosas this spring, the carsonii had already spouted several inches out of their pot, so I didn't re-pot them, thusly, can't report on their individual growth or proliferation.
