Other than having them warp sometimes I have never had an issue with a
8 ft 4x4 post 2 ft in the ground. But this next time around i'm going to use the pressure treated round posts. there 5-6" thick and not expensive.
I prefer the look of them.
Advantage of the 4x4 posts are you can buy post caps for them.
They even make solar lights for the tops that are pretty cheap.
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