Maggie's Farm

I'm going with poison hemlock, because of the flower.

"Poison-hemlock can be confused with wild carrot (Daucus carota, or Queen Anne’s Lace), as with many other members of the parsley family that resemble it. It has hairless hollow stalks with purple blotches. It can get quite tall, sometimes up to 8 feet or higher. It produces many umbrella-shaped flower clusters in an open and branching inflorescence. In contrast, wild carrot has one dense flower cluster on a narrow, hairy stem, usually with one purple flower in the center of the flower cluster, and is usually 3 feet tall or less. Poison-hemlock starts growing in the spring time, producing flowers in late spring, while wild carrot produces flowers later in the summer."

Also, poison hemlock "Leaves have a triangular shape, are lobed and fern-like, though not as fine and lacy as wild carrot."

Wild Carrot "leaves are fine, lacy and pinnately lobed."

The leaves in that photo look a lot like the photo of the poison hemlock.