My pawpaw sapling survived the winter!
I planted a 'Sunflower' pawpaw sapling last spring from Burnt Ridge Nursery, and it grew admirably last summer. It added approximately 6" of new growth despite a less than stellar planting by me (I disturbed the roots badly while removing it from the pot). It is planted in a sheltered spot by a row of evergreens, but to protect it for the winter I put a few straw bales around it to form a windbreak of sorts and insulate the soil around it. The remaining 1' of sapling that stuck out above the bales was exposed to the elements until drifted over by snow mid-winter. According to my backyard weather station, our low temp of the year was -22F for one night, along with two other nights at -21F.
Much to my dismay, it just wasn't leafing out this spring. I'd pretty much given up on it until I noticed a few leaves while mowing the yard this weekend! All of it's buds are now opening, even the ones at the very tips that I was afraid would have frozen back.