This weather is tough on shallow rooted plants, tho' the frost here was deep enough to be only slightly affected. The thaw over 48 hours melted all of the residual, icy snow pack left over from the storm 1 - 2 December. 19 December's rain thawed a thin layer of the ground frost. Overnight frost 19-20 December only partly refroze that, 20 December it will re-thaw.