Recommended material for Grape vine trellis post

[Daca]

Have some grape wines planted last autumn, that i plan to train along post. Than when they grow a bit more i will make a trellis for them.

Now, wondering about which material to use for the post ?

Initial post i plan to be only 1 meter above the ground. Than when grape wine reach above 1 meter, than i would train them over lower trellis wire.

Plastic post are easy to find (aluminum post coated in plastic), and they are not too thick, perfect.

But i would like something more sustainable, if i can figure it out.

Looking for suggestions. Thank you.

I have some black locust tree trunks in different diameters, that i could use, but wondering what would be the right diameter ?

Also, raw spruce lumber is available to buy, which i can make into posts.

[ameno]

Anything would be suitable in theory, as long as it's long enough (1m won't be enough. You want posts about 2m long - remember that you lose a fair amount of height after you hammer it into the ground) and won't rot too quickly.
If you use wood, it really needs to be pressure-treated wood, though. Any untreated wood will rot in the soil pretty quickly, and will then topple over in a few years.

And if you're going to use black locust for any sort of posts, make sure the wood is completely dead (a year after cutting, maybe). If it's still alive, it will take root, and then you'll struggle to get rid of it.

[Snoop Puss]

Hello and welcome.

Where I live, people who want to train vines in the way you're describing use aluminium posts. More expensive but more durable than wood and vines will live a long time. In the past, they just used lengths of rebar.

[Nicos]

Hi there, and welcome to the Vine.
Can you get hold of any old scaffolding poles? They will last forever!

[Jungle Jane]

My dad had the same kind of set up with about four posts knocked in the ground,about one meter tall,maybe 120cm because of the bit underground,all set a meter apart,then wires attached to each post like two long lines,for the vine to wind around so it’s all tidy & you can see over the top but after 10 -15 years wooden posts need replacing.