What went wrong
This is my second wildflower meadow. The first was planted 10 years ago and was successful until it went native to the point where there was more goldenrod than flowers. In 2013 I decided to replant. I started with Roundup on Aug 1st, tilled it 1" deep about Aug 15, more roundup when weeds sprouted, more tilling, a third application of roundup. By then it was October, 2013. I tilled the ground just before the first frost and planted a selection of appropriate wildflowers. (same species that were successful last time.) In late July, 2014 all I have are weeds, a few black eyed susans and one coreopsis - in 1/4 acre! What went wrong? Should I have mowed it in late spring? I got the seed from Prairie Wildflower Nursery.