Mixture of wildflower seed is about 70% and native grass seed is about 30% at this plot. Little blue stem is the dominant type of native grass seed.
According to Eric VanderStouwe, mixtures might be up to 90% native grasses on Conservation Reserve Program land. He says that Mother Nature does her calibration once seed is dispersed.
You can see from the diversity of seed shapes, sizes, and attachments that dispersal of a wide seed variety might be challenging for machinery.
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For the article about brome management with wildflowers and native grasses go to:
http://www.yankton.net/river_city/article_30403614-84a9-11e3-a20f-0019bb2963f4.html
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