Talk about bad advice.
I'm just hoping the bracket folks didn't read the OP.
Go ahead with you plan. Make some kind of form, get cement
6" or more above grade. Taped the top so water runs off.
Your post will never rot off from the water.
It will rot in the zone where soil meets air.
Look at an old rotted off post.
The very top, where rain soaks in, is rotted.
A couple inches above garde rot starts, it goes a couple inches into the
soil/cement. The wood below that? Probably still solid.
Being in Alberta, you might want to consider the frost line posts.
If not, liquid water and rot won't have a chance to be a problem!
