What to do when the temps fall in early spring?
Ten years ago, this is what I did about a heavy frost one night when the tree peony buds were threatened. My son’s orphaned socks made perfect covers for the buds! People thought I was nuts, but it worked!! Some plants withstand cold temperatures by having a high sugar content in winter, almost like an antifreeze, but these peonies don’t have that so the cells would have been damaged as the water in them froze and the cell walls burst.