"'Mike'" wrote in message
...
In my experience a small hole is only best in solid ground. In soft sandy
soils a bigger hole and more postcrete/concrete is more stable.

Mike


When I had my fence posts and fence panels delivered, the chap who
delivered then was an expert, it was his own business and had years of
experience. "You have very soft soil here, you need to make a big hole and
concrete them in" which I did.

The trouble was that they have nearly all rotted off by now at ground
level. The fence was put up about 20 years + ago and they started rotting
at out 10 years ago


Softwood posts?
I used oak at the last house, we lived there 20 years and when we left there
was no sign of any posts rotting. I even built a chicken run using cheap
reject (warped, bark edged, etc) oak posts at the same time. These were
never treated with anything and still stand straight (well as straight as
the warped ones could stand) with no sign of rotting off today. My old fence
has been replaced with some thing prettier, must ask what the posts were
like when they were taken out next time I visit.

Mike
(The muddy one)