Buckwheat Kitchen Garden is obviously not the only source for information about buckwheat. Here are a couple other links which may interest you:
"It's Better With Buckwheat"
"An easy to grow. . ."
Birkett Mills, which manufactures Wolff's Kasha and other buckwheat products plus wheat-based foods, used to publish booklets full of recipes. Here we are in the Digital Age and the information is now on a website.