The silver lining to all this is that I had to hunt down that pure patch of whatever that is we're looking at. Our property looks like a jungle due to all the rain. The sheer diversity of what I sprayed makes me very optimistic about a successful burndown. I had enough seed and fertilizer to do a 1/5 of an acre of plot. The brush and ferns grew like none other this year. It was so tall where I wanted to plant that I didn't dare try spraying above my head with the wind I had. I still ended up with a 6000 sq ft plot.
The heat and ticks were also another reason I didn't do more. When I took off my spraying gloves, I dumped a half a cup of sweat out of each one, and swatted about two dozen ticks off me.