What was the deal with "Siberian Wheat"?

A quote from one of the Antifederalist papers, specifically “What Does History Teach, Part II”:

“I should not compare the new Constitution to a house. I should fetch my simile from the country and compare it to Siberian Wheat (otherwise called Siberian cheat) which is known to have been the most praised, the most dear, the most worthless, and most short-lived thing that was ever adopted.”

I gather that there was some fad or craze for Siberian wheat touted as some super crop, which turned out to not be all that. But does anyone have more specifics?

From A letter from John Adams to Elkanah Watson, August 11, 1812: