By winter rye are you talking rye grain or rye grass? I assuming annual rye grass. Switch grass and wild flowers are not a good mix, the switch will shade them out and over take them. Instead of switchgrass, consider shorter natives like little blue, side oats, etc. I have the stock seeds short native mix on the east side of the pond (opposite of the dam) and it looks great. With this I mixed in the stock seeds wildflower mix. It is 3 years old and is looking great. Nice and green right now even though we haven't had 10" of rain all year.
