I separate the small, medium and large seeds. The small and medium seeds are broadcast, the large seeds like peas, and melons, are drilled into place throughout the bed. So far things are growing well. It is awesome to see all these different plants growing together.
Next year I plan to grow amaranth, corn, oats, quinoa, rice, wheat, and buckwheat with a catch crop of clover, radish, lettuce and other fast growing veggies.
I am always looking for new plants to add to my polyculture so post your mix and perhaps we can all add diversity to our gardens.