My T. tricolor tubers have arrived well in advance of my plant to construct a window box for them, and I am considering trying them in "woolly pockets" instead: http://www.woollypocket.com/wally/wally-one/ These are breathable felted polyethylene bags used in vertical gardening: Height = 15 inches, Length = 24 inches Volume = .40 cubic feet. Does anyone have experience with this type of product or thoughts about it's suitability to T. tricolor? In case you're wondering why I want to windowbox this plant, the location will provide the best winter sun I can muster. Also, I grew up near the Isabella Stewart Gardner Museum and remember its Nasturtiums much better than its stolen Vermeer: http://gardenvisit.com/garden/… Best, Max Oakland CA