Phil, thank you very much for this information. I told the boss that if no-one made a reply, I was going to call you cause I knew that if anyone were to know what I was asking, it would be you. d:-)

 A friend of mine in eastern Washington state, near Spokane, had said that "more winter wheat is lost in the spring, than in the harshest of winters", in his area. That made little sense, so I asked what that meant. He said that once the wheat broke dormancy, if a cold late freeze were to come through, it was likely it would kill a lot of the winter wheat. (in his area) I took that to mean that the stage of growth must be higher on the feekes scale, but the "breaking dormancy" part of his statement has me wondering just what the growth stage is that vernalized winter wheat can be killed with freezing temps. ?

 I will check out wheatworld this evening.

 Thanks.