This plant showed up around our lake this summer. I never planted it, so the birds, cranes, or other wildlife must have brought in the seed. Anyone ever seen this plant before?
Welcome Plantsinthemail.
This is just a suggestion as I cannot see any flowers to aid id. I believe it may be in the Lamiaceae family. Possibly a Lamium sp. Common name dead nettle. The way the leaves are arranged and the remains of the flowers suggest it. If correct it will have square stems. After the petals have dropped it looks like ......