Daisy Tree in Wisconsin

I planted a thriving Daisy Tree this year outside and was wondering if there was anything I can do to make it survive our terribly cold winters short of digging it up??? Any help would be greatly appreciated.

Do you by any chance know the Latin name for your daisy tree? None of the plants I can think of that go by that name are even remotely close to hardy in your area so if it's one of the ones I know of then there's really no chance it'll survive, but before I discourage you too much I want to make sure we're talking about the same plant!

Here are the ones I know as daisy tree:
http://davesgarden.com/guides/pf/go/76034/
http://davesgarden.com/guides/pf/go/120446/

The card says: Golden Shrub Daisy, Margarita de Arbusto Dorada, Euryops pectinatus "Viridus". This plant is currently in 40 degree weather and is still blooming.

Unfortunately it's not anywhere close to hardy in your zone either, so I don't think there's any way you could possibly protect it enough outdoors. If you want to keep it I'd dig it up and bring it in once temps start to get much below freezing. They do bloom during the winter but I'm not sure if it'll be happy enough inside to keep blooming or not, you'll have to let us know what happens!
http://davesgarden.com/guides/pf/go/87406/

Here is another link:
http://www.magnoliagardensnursery.com/productdescrip/Euryops_African.html

Daisy Tree in Wisconsin. I dug up my Daisy tree, potted it and took it indoors. It has severly wilted since(4days) and it looks like it may die now. Is there anything I can do to save it. It was out of control thriving/blooming outside at the beginning of the week with the temps in the low 40's. PLease help!

My guess is it's transplant shock--if the plant had been in your garden most of the year you probably didn't get all of its roots when you dug it up and potted it. There are differing schools of thought on whether you should cut back the top part to compensate for the roots you left behind--I used to always hear that you should cut back the top, but I've also seen some people say that you shouldn't because the plant can use all the leaves it can to photosynthesize and help the plant recover. So unless you think you lost a ton of roots I'd probably leave it alone and see if it starts to perk up in a few days. I'd keep it somewhere that gets light but not direct sun, and make sure you're not overwatering it (just because it's wilting doesn't mean it needs to be watered--always do the "finger test" in the soil first to see if it really needs water or not). Next time it does need to be watered, you might put a little Super Thrive or other root booster in the water (just make sure it's a root booster, not a fertilizer--fertilizer would not be a good idea at this point) Also I hope you shook off as much of the garden soil as possible and potted it up with soil-less potting mix. If not, then you need to get the garden soil out of there as quick as you can, garden soil doesn't drain well enough to be used in containers.