All 3 tubers grew within 3 weeks - I planted this on a bed facing the east. It is one of the best areas to grow flowers in my yard.
I prepared the section with peat moss, garden soil, and cow manure and compost, and after planting the tubers, I spread some Preen around them. The flower bed gets a lot of sun and I have been watering almost everyday. I planted the tubers at the end of June and although I do not see buds yet, I am optimistic that I would see some blooms before fall.