I don't know about the floating heart, but the dwarf umbrella palm makes a good house plant. You don't even have to keep it in a tub of water, just keep it consistently moist and put it in a sunny spot, and it'll be perfectly happy. I put mine in a shed (with a window) last year, and it died back presumably because it was too cool, but returned in the spring.

I would think the iris would be fine sunk in the ground, as you suggested.

Thanks for the information about the dwarf umbrella palm. I'll put it in the solarium for the winter. I put the fish in an aquarium with the floating plants. I know the water hyacinth will die but possibly the parrot feather and frog bit will survive. I haven't had either of them before so I'm not sure. I have a Dwarf Water Lily Nymphaea Graziella which I put in a damp burlap bag, wrapped in a garbage bag and put in the garage. I hope it will survive. I'm not sure whether to put the Yellow Floating Heart in with the fish or in the garage with the water lily.

The parrots feather will probably survive in the aquarium, and if it gets "leggy", you can cut it back, just making sure you have some of the roots.

Hi,
the floating heart will probably be just fine with the water lily, it is very hardy. Another option which has worked for me is to put the plants in a garbage bags loosely closed and put them in the fridge crisper, of course that only works if you have the room.If there is no chance of them freezing you could likely get away with putting the roots of the parrot feather in the garage as well, double your chances by cutting off the tops for indoors and the roots in the garage. Hope this helps.

I overwintered parrot's feather by planting a couple sprigs in a pot and putting 'em near the window - kinda like the umbrella palm (I had planted it in a pot with no drainage holes and just made sure that the soil didn't dry out).

I just used some cuttings so they didn't have any roots at the time, either.

Thanks for all your help. I'll put the floating heart in the garage with the lily, along with some of the parrot feather roots.

Parrot's feather is hardy outdoors here in Portland and if you are in a Zone 8 part of BC it should be fine for you too. My ponding friends in Vancouver and I do the same with our plants and have almost identical weather and experiences with what lives and what doesn't.

Frogbit and umbrella grass (cyperus) are tropical and won't make it outdoors.

I have potted water gardens as small as 16" outside all winter.

I've had ceramic pots crack so I now use plastic/foam pots that look like ceramic but aren't.

I've got LA iris, Jap iris, parrot's feather, mini parrot's feather, equiseteum, mini equiseteum, marsh marigold, pickeral, acorus, mini acorus, black flowering rush, slender rush, corkscrew rush, variegated water celery, mares tail, golden club, aquatic forget me plus 10 different hardy waterlilies all staying out for winter with no special precautions other than cutting off any dead growth. I don't sink anything into deeper water, most are in container water gardens anyway.

Graziella would be just fine outside for winter, I've had one for over five years, all I do is cut off the dead pads. She is planted in a liner pond with a mud over the liner so no pot. The pond is less than two feet deep.

Floating heart should stay in the pond the same as hardy waterlily. Sink to the bottom. It will come back on it's own, often traveling to other pots via seeds and/or roots.

Umbrella palm keep sink that container is a big bucket and put in the sunniest window you have.