"Jonno" writes:
The idea of spraying the leaves with water, allows the plants to get to
temperature stage which then wont burst the cells.
After they do and have recovered the temperature equalises with air
temperature, which happens at a much slower rate, so no burst cells.
The plant should recover fully..

This means that you can't leave your garden hose lying across the ground
ready for use, or it will be frozen (and maybe the water in it, too) just
when you need it.

I recall years ago seeing a commercial orange farmer in a frost-prone
area had what looked like large aeroplane engines + propeller mounted
up high in his orchard, and they'd turn them on during frosty nights
at the critical stage in the fruit's development to move the air around
over the trees.

You never get a frost on windy nights. Or hire a helicopter to hover over
your precious tomatoes.
--
John Savage (my news address is not valid for email)