Sea Beet (Beta vulgaris)

Sea Beet (Beta vulgaris)

Observation - Sea Beet (Beta vulgaris) - Global. Description: Not a plant I'm familiar with. Growing on waste ground at the coast. Can anyone confirm the ID, please? Edit: Changed to match Spins' ID. Many thanks.

Not a plant I'm familiar with. Growing on waste ground at the coast. Can anyone confirm the ID, please?
Edit: Changed to match Spins' ID. Many thanks.