Does anyone have those growing in there pasture this year? What r some effective methods of eliminating them?

Crossbow, get them sprayed before they bloom.

When I bought my farm in 2012, years of neglect by a renter allowed the pastures where the cattle yarded up to become mostly poison hemlock. Some of the poison hemlock in the low areas here gets over 14 foot high. It's a biannual and frequent mowing will eradicate it from the areas mowed. I still have issues with it on the edges of the woods and on manure piles I can't mow. This year I have the most poison hemlock I have had in the last few years. I need to spend a few days hacking it down before it sets seeds. If you cut the poison hemlock down, as it's flowering, at the end of it's life cycle, it often won't have enough energy to grow back and reflower to set seed.

Keith

Keith it’s every where here. Last couple years it’s really showed up. Evidently loves that wet weather

Roundup will work on it if rate is high enough. 24d just wilts the top of plants and won't completely die. If in pasture an not wanting to hurt grass mix up a batch of light 24d and remedy and it will smoke them and not leave you with bare dirt