The natural range of the fly trap has historically been very limited. Their numbers are high and they are not going anywhere. Plus, they are easily propagated. This article is only touching on the vulnerability of a few isolated populations.
If its legal give it a shot though Im sure that far north the rhizome would freeze and die during the winter. You can get them for cheap, heck my walmart sells them!
There are all kinds of varieties as well, some with great color! Check this out...