The Ohio Department of Natural Resources has issued a warning about the dangers of poison hemlock, currently in bloom across the state. The plant, which can be mistaken for wild carrot or parsley due to its white clusters of flowers, is highly toxic. Touching any part of poison hemlock will not cause a rash, but ingesting it can be fatal. What’s more, mowing the plant can release particles into the air, potentially causing a reaction if inhaled. Poison hemlock has lacy, triangular leaves that resemble ferns, and stems that are smooth, hollow, and often marked with purple splotches.