Alas, the sassafras tree does not grow this far north! But, with Global Warming, it soon might. I'll put sassafras on my climate-change planting list, along with tulip tree, evergreen magnolia, and Osage orange (aka Monkey Brains). Of course, by the time my area is upgraded to Zone 6, the mosquito will have evolved into the size of a Carboniferous-era dragonfly (of which I recently saw a full-size model, and it was horrifying).