Thank you! Tons of great reading on your site!welcome to TEG from mid-Michigan.
you'll perhaps find out that many perennials do well when covered with snow for the winter, it acts as a blanket and buffer against the colder freezes.
let us know how it turns out.
as for bush beans... there's quite a number of us bean lovers here and we have many conversations about them... i'm pretty sure i even mumble to myself in my sleep...