Tubers can be harvested 4 to 6 weeks after flowering. Even though the flowers are pretty, yields will be better if the flower buds are pinched off as they appear. In cooler areas with well-drained soils it is better to dig them only as you use them. In subtropical areas and poorly drained soils the tubers may rot if left in the ground once the tops die back, so it is better to dig the whole harvest at once. Tubers do not store well out of the ground. Take care to store them in slightly damp sawdust or sand in a dark place; or store them in a plastic perforated bag in the bottom of the fridge.
Gary Grata wrote:Regarding saving for replanting.... is there a best method of storing them?