Many individuals mistake poison hemlock for wild parsnip (Pastinaca sativa L.), which contains a phytochemical called psoralen, which can cause severe skin blistering, burn-like symptoms and skin ...

Contact herbicides are the safest way to control poison hemlock, as all parts of the plant are toxic. Wild parsnip often grows near poison hemlock, but unlike hemlock, it causes skin reactions.

For small populations of poison hemlock and wild parsnip, pull or dig up plants when the soil is moist. While poison hemlock is not toxic to touch, precautions should still be taken when handling ...

We’re lucky because poison oak isn’t here, but hundreds of miles west of the Mississippi River. But the real fighters are wild parsnip and poison hemlock.

I tend to see more stands of poison hemlock than wild parsnip in the Miami Valley, though we do have both. Don’t mistake this for Queen Anne’s lace, which blooms in late July and August.