In article ,
"Denis Mitchel" wrote:

Does the temperature have to be at or below freezing for frost to form on
plants?

Thanks

http://en.wikipedia.org/wiki/Frost

Notice the mention of dew point.

Bill who thinks the frost acts like a magnifying glass hence the plants
burn. Not sure if this is correct only know that late frost about here
has me out spraying water on tender new plants.

--
Garden in shade zone 5 S Jersey USA

We have 5% of the world's population; we have 25% of the world's
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