Despite its name, bitter dock is edible at several stages, though its flavor profile is notably sharper than spinach. All About Dock (Members of the Genus Rumex)

: Small green or pinkish flowers appear in branching clusters, eventually turning into brown, three-sided seeds with tiny "toothed" margins on their wings.

: Large, oval to oblong, reaching up to 12 inches (30 cm) long. The lower leaves typically have a distinct heart-shaped (cordate) base and may have red veins.