I'm looking for suggestions on mounting a board vertically to a tree but without drilling into the tree or harming it.
I was looking for some type of bracket or strap that would withstand multiple years of weather (i.e., not rust or disintegrate after one+ year of weather). I live in the PNW, so rain and moisture are an issue. The tree is an established and mature walnut.
The board will support lighted house numbers and will be about 30" long by 3-4" wide (final width tbd), so I'll secure it in at least two spots, maybe three. The trunk of the tree has a circumference between 60-70" depending on the spot along the trunk.