– Christine Gelley, Agriculture and Natural Resources Educator, Noble County OSU Extension
![](https://u.osu.edu/beef/files/2024/05/HemlockBoggs2-300x200.jpg)
While hemlock may still be vegetative today, it will soon look like this.
Poison hemlock has already emerged in a vegetative state around Noble County and beyond. Soon it will be bolting and blooming on stalks 6-10 feet tall. All parts of the plant are toxic to all classes of livestock if consumed and is prevalent along roadsides, ditches, and crop field borders.
It is a biennial weed that does not flower in the first year of growth but flowers in the second year. The earlier you can address poison hemlock with mowing and/or herbicide application, the better your control methods will be.