Poison Hemlock is a highly toxic plant native to Europe and North Africa, but it has also spread to parts of North America. It typically grows in moist areas and can reach heights of up to 10 feet. The plant has small white flowers arranged in umbrella-shaped clusters and feathery, fern-like leaves. All parts of the plant contain potent alkaloids, making it extremely dangerous if ingested. Historically, Poison Hemlock is known for its use in ancient Greece, particularly in the execution of the philosopher Socrates. Symptoms of poisoning include nausea, vomiting, and respiratory failure, which can be fatal. Due to its toxicity, it is important to avoid contact with this plant.