As the pond is getting older more sediment is washing into the cobblestones. I'm going to try to start some pickerel weed or some marsh iris that I have between some stones. I haven't had much time to experiment with it yet. My iris is pretty cool, it has softish grass like leaves with purple flowers on a long stem. It will tolerate having it's feet wet but I'm not sure for how long. I wish photobucket worked better on my computer I would post more pictures. BTW snrub, your pond looks great!!!

My driveway has the road fabric with 6" concrete chunks for a base and gravel with fines on top of that. It's all stayed where they put it and it hasn't packed down much.

[Linked Image from i108.photobucket.com]