Hard woods rot too quickly. It will develop dry rot after a year or two. If hard woods set where there's moisture (hive stand, etc) it will rot out completely in a couple of years.
Woods of choice, in order, are: Cypress, Cedar, Fir, Pine, Spruce, and Western Hemlock. All soft woods, check for pricing. Hemlock is often the cheapest but also the most fragile, it works for boxes, tops, and bottoms but not frames.