Pond Boss Forums AQUATIC VEGETATION Balance of plants in the environment Reducing Nutrient Levels in Small Pond with Plants

I would assume that is limited by just how cold your winters are. Here in Northeast PA it isn't uncommon to see 18" of ice on the pond in winter.

Looked at the plants earlier and they are flowering! Nice purple flowers. So if they are about to produce seeds I expect they will be in there next summer. I will keep an eye out for returning plants outside of the ring next summer. I've got to get out there with a camera and take a picture.

I spoke to the guy who gave me the plants from his garden pond. He told me his flower every summer and he doesn't always get new plants (for no reason than he forgets to do it) and has never had new plants just arrive from seed.