Where's the Wheat?

I've just driven through over 700 miles of Missouri and Iowa and have seen nothing but endless fields of fuzzy golden corn and velvet green soybeans [plus occasional bales of alfalfa--now there's a fun word!].  This strip of the nation's breadbasket is decidedly gluten-free.
So where do they grow wheat? Or oats? I'm hitting up Kansas over the weekend.  We'll see what we see.

[I also hit an insane rain storm outside of Des Moines.  The sky went deep twilight at 2pm, the wind started flattening the corn, and the gauge on my {borrowed} car told me the outside temperature dropped almost 25 degrees in the ten minutes before the rain hit. I was sure I was going to have a cow fly by me, Twister-style,  but all I had to dodge was a giant Rubbermaid-type trashcan in one lane and the giant lid in the other.  Frankly, that's as close to cow-dodging as I need to get... You may recall I haven't had a car since I moved to Yankee-Land last year -- and my former cars were stick-shift, so I tend to use both feet in danger-reflex situations.]