I have a creeper in a pot that sat a few inches in my little tub pond all winter. When we had hard freezes I upended a clear tote over it and the couple other plants at one end so the relatively warmer water might add some heat. The Jenny thrived (throve?) and made a nice curtain of rooty viney leaves across and into the water.
I just moved my goldfish into a bigger trough pond with a bog filter a couple of days ago, and plopped the pot of Jenny on a large brick to tide the fish over until I get more plants this weekend (some mini cattails and grocery store watercress in the filter).
The fish have been hiding out in the creepers and roots and eating them and the algae on it so far.
I kept Jenny from taking root in the ground next to the tub pond, but the new set up will have a bigger boggy area, so maybe I'll toss some cuttings down for cover until the rainy season comes back and I have my overflow/bog refill going.