Do they have a better chance of making it thur the winter in the pond? ...I just like doing things in my own.
I would take some inside now if you want to overwinter them. I think the odds are against any left outside surviving. You might get some to pop back from seeds if they were produced by the plants this year and are nestled in around the pond banks out of reach of mother winter, but I wouldn't count on it. There's a reason that they are not considered invasive this far north.
EDIT: I found an older thread of mine where you (RS) have them coming back every year. I wonder what makes your pond conducive to seed germination???...the proof is in your pudding!
