Ben Hunting
Ben Hunting
Actually, the inverse - grass apparently retains moisture and accentuates the frost.
Frost in France
- Thread starter Jeff Grossman
- Start date
robert ames
robert ames
that seems counter-intuitive, as overhead sprinklers are one of the defenses against frost. the physics goes something like this--as long as liquid water is being converted to ice, the temperature will not drop below 0 celcius.
robert ames
robert ames
thinking on this just a bit more, my guess is that bare earth releases more heat into the surface air than earth insulated by a barrier of grass, thus allowing temperatures to drop further.
Ben Hunting
Ben Hunting
I don't understand the science myself but here the writer states that in addition to moisture it's the combination of frost and sunshine that is to be feared. Apparently, the frost on the buds acts as a magnifying glass for the sun, which then burns them. Richard Leroy is quoted mentioning a "feuille de cigarette" effect.
Jeff Grossman
Jeff Grossman
I had heard of this effect with dew rather than frost. In this article, the important feature of the plant is whether the leaves are smooth or hairy.
Kay Bixler
Kay Bixler
All to familiar with "feullie de cigarette" around here. It's interesting that sometimes one shoot will get burnt and another right next to it will be fine. Must be the hairs.
