My wife wants me to build a flower box for underneath our big bay window. Just wondering what would the best lumber to use. It is a rather long window at just over 10 feet long, so i figure I would need at least three supports. Anyone have any ideas?
Cedar or white oak will last a while. Local big box stores sell cedar. Also, consider plastic planters placed into the wooden window boxes. A little less evaporation. Buy the plastic planters and build your wooden window box to hold/hide them. In that case you could just use pine or whatever as long as it was painted.