I planted it for the first time last summer. My purpose was two fold. First for screening, which others have mentioned after the first frost or two, it turned burn and was easily blown over. Second as a soil builder. Most of it was planted on sandy soil. Old pasture ground, poor fertility. I was impressed with the growth, even though we experienced a drought. Of what i planted the poorer soil, averaged 6-7' the better soil areas were more like 8-10'. I through some in my garden among the sweet corn, it grow 12'. None of the plot plantings received any fertilizer. I did a RU burn-down and disced and rolled it.
Ill plant it again. Im not sure what to do with the area that I planted last year? Buckwheat, clover, more sorghum/sudan?