"Chris J Dixon" wrote in message
...
Spider wrote:
As Ron says, you could still drill holes in the bottom and place the tanks
on brick stacks. This is actually a very good idea because, in winter,
the
rootball will be protected from the icy ground.
I'm just trying to ponder the physics of how, when it gets really
cold, the small mass of the tank will stay warmer than the large
mass of the ground?
Chris
--
Chris J Dixon Nottingham UK
Have dancing shoes, will ceilidh.
It may only stay *slightly* warmer, but that may make all the difference. I
did suggest that further rootball protection would be necessary. In
practice, if the tank (and therefore the rootball) are protected, the
smaller mass of the tank will necessarily warm up before the greater mass of
the frozen ground. This gives the plant a reasonable chance in cold
weather.
Spider