> I had assumed that most of Canada would be later than the Northern tier of the US It is, but you don't find much winter wheat outside of Southern Ontario, wh

> I had assumed that most of Canada would be later than the Northern tier of the US It is, but you don't find much winter wheat outside of Southern Ontario, which is actually pretty far south in the grand scheme of things. The most southern end of the province is on the same plane as California. The Canadian prairies, where most of the wheat is grown, are all about the spring wheat. That's typically a September harvest. > Idaho, Minnesota, Montana, Oregon, Washington, and Wyoming Only one of those states is not contiguous with Canada. Given much of the same environment, they share a lot of the same farming practices as western Canada. In other words, your dates no doubt include spring wheat, despite what the opening section of the document says. This explains the wide variances (July - September) in some cases, with winter wheat being the early crop and spring wheat being later.