Thanks, @Senormac! Over the last 4 years, this has been the wettest. I'm glad it's this year and not the first year. They'd probably be dead.
Ever since I planted the Nugget and Cascade rhizomes on Saturday afternoon that you sent me, it's done nothing but rain here in the Upper Peninsula where I'm at. Just stopped raining a little while ago.
Planted them out in half barrels (55 gallon) with a bunch of holes in them, some small rocks at the bottom with about 3/4 to 1 inch of sand on top of the rocks, and a little sand mixed into the potting mix. Fortunately, they have drained extremely well. Praying that they'll start out OK...