What I did was sow the wheat about six feet from the squash plant. Then over time, I allowed the squash vines to run, mingling with the wheat. By the time the vines reached the wheat, the wheat had already grown tall enough to stay above the squash leaves. The thought of being able to produce two crops in the same space is intriguing.
Early in February all the wheat plants started producing heads. The full sun plants grew the tallest and fullest with the most heads, but all the wheat grew and is now producing.
Right now I'm not growing enough wheat to do anything with other than to save seed for the next crop. But now that I know that wheat will grow here, I plan to raise it for the livestock.