Switchgrass is gaining in popularity here for places that need additional cover. Too many around here only think of trees when they think of deer cover. Some are putting in WSG like switchgrass and liking it once it's well established. Hope you seed dealer has told you to be patient. With species like switchgrass it can take up to 3 years to really see the success.

Curious what you see with the sunflowers. I planted some with a fall food plat a couple years ago. Got good establishment, but they didn't last long, deer ate them all!