What's your opinions on the first 2 seed mixes?
Honestly, it sounds expensive. If you really want to plant those things, maybe just try a few of them together and not everything including the kitchen sink. Any of that seed is readily available separately and probably generic too.
But here are the problems I see:
Sunflowers - If your deer density is relatively strong, you simply won't have sunflowers. They'll eat them faster than they can grow. Another issue is weed control. You could plant Clearfield sunflowers and spray them but that's incredibly expensive (special herbicide). You can spray a grass-selective chemical like Clethodim, but then you're still dealing with broadleaf weeds, AND you'd kill all your millets since those are grasses too.
Millets and sorghum - Not going to grow tall enough IMO to be an effective cover screen. For millet to get that tall it has to be in very nutrient rich soil with consistently high soil moisture. It'll produce seed just fine... It just won't shoot up in super tall and dense stands.
Buckwheat - Will not tolerate high moisture soil. It does grow pretty dense, but usually not very tall. Deer so however like to munch on it.
These mixes kind of have me scratching my head because the management implications of the individual plants don't really jive with one another. By planting these mixes you can't spray with herbicide and there will always be something lacking. Plus, I can't see them being a very desirable food source once hunting season comes around. To me it just doesn't look like the benefits outweigh the costs.
