Harvests grass seed, I suppose. I'm sure the world goes through a lot of the stuff as people need to re-seed their lawns so they look nice and perfect. Word on da street is that the Willamette Valley (which is where 95% of the people in Oregon live) is the grass-seed capital of world. Which, by the way, is very inconvenient if you happen to be allergic to that kind of thing! It is noticeably easier to breathe on the Eastern side of the Cascades than it is in the valley, just because there's so many allergens floating about.
From wiki: "The major agricultural products of the valley include many varieties of berries and vegetables. The valley also produces most of the grass seed, Christmas trees, and hazelnuts sold in North America."[/digression]