Lots of questions here about outdoor wood/finishes but most of them are for furniture or other high-end projects. I'm looking to build planters like this one...
The plans I purchased list MDF as the material but I can't imagine using that for anything outside, even for something on a covered porch. I want to find a good balance between durability and material cost. I don't expect it to last forever but if it falls apart after one season it isn't worth my time.
I suspect the readily available pine with a decent exterior finish might be my best bet but would like to hear your recommendations and reasoning behind them.