I planted the bog plants with the dirt around the roots intact. Until there is a sufficient fish bioload, the plants won't have the fish waste to use for nutrients.
After reading all winter about this, it's going to be exciting to see if I can create a fairly self-sustaining eco-system in this pond. Posting about it in two different places has had some interesting results, too. Ponders think it's a cool idea for a small, "contained" pond, and goldfish aquaria folks are full of all sorts of dire warnings.
The most interesting thing to me is that, with sufficient space, you could create a contained bog filter on a much smaller scale inside for a goldfish tank.