My pond, here in zone 7, is about two feet deep.
The ice can get as thick as four to five inches but that is very rare as we
have mild winters. You need to plan for conditions in your area.
Frogs don't bury themselves too much, they just like to snuggle up. So I would
not put in a mud hole in the pond. Turtles and frogs have overwintered in my
pond with just a thin layer of muck down there. Depends on the year but could
have been as thick as two inches.
More important is a hole open in the ice.


ka30p
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