Check if your post is plumb using a level.
Removable post in concrete.
So the ol pressure treated wooden post in a concrete footing.
Move and adjust the post if you need to until it sits plumb.
Set planter barrel in place and mix the concrete in the barrel.
We filled the barrel with about 8 10 of concrete to a make a 16 18 planter.
Make sure this pipe is large enough to hold the removable post and 18 24 deep for stability.
I m curious if i can make the post slide in an out of the hole with just enough give to be removable but tight enough to minimize looseness and sway to ease pole replacement as the wood wears out every several years.
If you can have someone hold the post while you pour the concrete so your post doesn t move around.
If your metal posts have been set in buried concrete it s best to pull the concrete out with the each post and with mechanical help you can avoid excessive digging.
The concrete should fill about to of the barrel to provide enough stability for the posts.