The two weeds that Parsley Dropwort is most likely to be confused with are Hemlock and Wild Carrot, with are also from the Apiaceae family. All three of these weeds have white flowers in the form of umbels on top of upright flower stems. Parsley Dropwort has little swollen tubers on its roots, though these often aren’t very noticeable. These tubers allow the plant to regrow following control attempts.