Re: Flower box and flagpole
There are many things more appropriate than a dowel for this application.
Redheads - This is a sleeved expansion bolt that is inserted into a hole. As the nut is tightened the bolt is pulled through wedges that expand and bind to the sides of the hole, the harder you pull, the more it expands. There are several types of this anchor to choose from, not just the "redhead" brand.
You could epoxy your anchors into the brick.
This is what comes to mind in the moment, there are others as well.
I suffer from CDO ... Its like OCD, but in alphabetical order, LIKE IT SHOULD BE!!!