So where would I post this?

[wineguruchgo]

Cute (?) story.

Here is what I have found on the subject and your answers were on the mark!

Frost damage, or ‘burn,’ is caused when freezing temperatures cause vine cells to burst and die. While the vine’s secondary buds will be activated if the growth from the primary buds is killed, those secondary buds contain only about half of the crop potential present in the primary buds. If a vineyard is capable of producing four tons per acre and frost destroys the growth from all of its primary buds, the yield would be reduced to about two tons per acre. Since tertiary (third) buds have about half the fruiting potential of secondary buds, a later frost event destroying the secondary buds’ growth would reduce the yield to just one ton per acre.

So how do you keep vines from freezing? While vineyard managers historically have employed several techniques, the most effective uses water. Water-based frost protection systems work by creating wet ice around a vine’s green leaves, shoots and buds. Water freezes at 32°F; even if the surrounding air temperature is lower, ice with a wet surface can’t get below 32°F. But young vine growth can survive to a hair below 31°F. A long as liquid water is actively freezing around it, the vines never experience temperatures low enough to cause damage. The key word there is liquid—if the surface of the ice isn’t wet, the temperature of the ice can drop to well below 32°F.

If you had asked me yesterday which would do more damage to a vine I would have put ice over frost.

Amazing!