Re-reading this thread to see how it worked. I planted this 5/29/16. In my zone recommended dates are 5/20 to 6/30. The only thing that I grew was some lime green grass. Last year, I planted sunn hemp with buckwheat and sorghum on 6/9. Buckwheat and sorghum grew well. Not so much sunn hemp, few plants and not much height. This summer was unusual, many summer nights in the 40's. Recommendation is for constant 65 degree soil temperature. I would monitor the soil temperature for sure if I ever plant it again.
So how did it go, Weasel? Anybody else?