Anyone know the specs for these? I know that they need to be ____ far apart, ___ far up a post and the holes need to be exactly ____ in diameter. Don't they need to have a clear approach?
I know they can be bought but I would so much more like to buy another rose bush instead.
I wanted to update. I have found these house at Tractor suppliers. Since they are only 20 each and I won't have to pay shipping, that is the way I shall go.