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Posted by lisa --Previous Message--
on 7/28/2005, 12:43 pm, in reply to "Re: Frost depth"
65.67.216.236
Does a national map exist to indicate frost depths by regions across the US?
: My research indicates the frost depth to be
: about 30". We generally try to go down
: at least 48" to stay clear of frost. An
: extremely cold winter could go deeper.
:
: --Previous Message--
: Would you know how deep is the frost line in
: Morthampton County, PA? It's zone 6.
:
:
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