Re: Using Cottonwood for Bee Boxes
Actually cottonwood and the soft woods (hack berry being one) start to sort of oxidate on their own if they are stored a year. (this is per the guy who runs the tree service near me, discussing what will and won't store as firewood.) I'd see if paint will stick to it. Build one box, paint, see how it performs, stands up to weather. Painted or sealed in a wax dip, or some kind of oil dip, it might not do the warping that it would if it is shrinking and expanding in response to environmental moisture.
Stuck in Texas. Learning Permaculture in drought, flood and strange weather. The bees are still alive.