My plan next year is to hit the switch early and hard with brush killer such as crossbow, maybe spiked with something hotter. That crap has spread everywhere around here. I pretty much regret killing pasture and planting switch and trees because of the sh;t that grows up. Parsnip, poison hemlock, canadien thistle, pokeweeds, locusts, you name it, if it's bad and aggressive, it'll take over our open spaces. Good luck and let me know what works. Bushhogging helps me feel slightly better. Still a lot of seed gets released.