I mentioned sour cherries because in the sixties there was a huge snap frost and it killed most(90%+) of the sour cherries (which was what we mainly grew) and thats when/where denver suburbs, boulder, ft collins all had a huge group of homes built on these defunct orchards. The google earth history thing is real interesting and funny how much info we still have from back in the day for the west. Applewood (the five mile apple orchard) was owned by a guy who first started making potassium nitrate out of dynamite leavings and he did alot of work on trying to make FB resistant orchards although he eventually gave up in the 30s and sold Applewood for real estate. All the mountain towns are overrun with rich people who do not live there now.