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"The problem would be doing a grow in. Without irrigation you wouldn't be able to even produce a product to market."
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I disagree.
I've seen a couple courses with fairways grown in without irrigation and were playable, actually excellent after a year. Seeded in the late summer; thick and tight by the next. I've got photos somewhere. It depends on the climate-soils. There are a few places in this world where both are optimal for growing cool season grasses. Greens would be the big challenge, but believe with a water truck or farmers hauling tanks greens could be established sans irrigation in the same climate, and then left to their own devices afterward. They would have to be seeded just about this time, with the farmers and their tanks active during times of wind and sun.
I can't think of one area in the North America where it would work. The Pacific North West would be the closest, but their soils are usually crappy glacial till, the cost to get a good playing surface costly, summers can get pretty warm, and with all the cash spent you'd be nuts to not have irrigation.