On 04/01/2018 10:17, stuart noble wrote:
Based on my observations over the years, I intend to support my newly acquired grapevine with 4" x 2" posts bedded in fine gravel. They always rot at ground level, so maximum drainage for the first 6" or so would seem to be the key to post longevity. Well, at least you can yank them out easily enough when they do rot. Anyone any comments? Metposts are not really approved of by the allotment establishment!

Most builders merchants sell treated round fence posts designed for
stock fencing not only will they last a lot longer than 4x2 timber but
will be a lot cheaper.

I have one under a bird table that's been there 12 years just in soil
with no sign of rot.

Mike