Absolutely. Several of the beds have large stones in them and they always melt off first. And the pond has huge stones in and around. I think the little hummock to the west of the pond always thaws out first because it is getting the heat generated by the stones getting sun from sunup to almost sundown. It would be interesting to see if I put several large stones in the bottom of my little 24"dx36"wx48"h rolling greenhouse (left out the wire shelf on the bottom so the stones sit on the deck) what diff it would make in the temp at night. Would be a neat experiment.
