We have a 2200 sq/ft group of trees in our back yard and have been trying to get stuff other than “junk” to grow in it. In 2012 I killed off everything that was growing in there and put down a true woodland seed mix from Prairie Moon last December. I mowed it all year to keep any returning “junk” from going to seed and once the leaves dropped you could really see all the first year seedlings. Some of them have some nice fall color among the leaves.
I’m looking forward to see how it does next year.