"Sheldon" wrote in message
ups.com...
"JoeSpareBedroom" wrote:

The other issue is that most plants don't want the soil to be hot. If the
plants are in the sun, the pots will be at least as hot as the
surrounding
air, sometimes hotter.

That's not true. Some pot materials may heat up but so long as the
soil is moist there will be no heat build up around the plant's roots
whatsoever... as the water evaporates the soil will actually cool.
Were your fercocktah theory true plants wouldn't survive, and of
course would turn science on its head.

Your comments are based on assumptions which are unlikely to be dependably
true.