this plant grew along with beets . looks like some kind of spinach.
https://photos.google.com/photo/AF1QipNDcAQwgJjOjLkuR3GAwl2TW45vjadiCkPMzAg
https://photos.google.com/photo/AF1QipNDcAQwgJjOjLkuR3GAwl2TW45vjadiCkPMzAg
https://photos.google.com/photo/AF1QipNDcAQwgJjOjLkuR3GAwl2TW45vjadiCkPMzAg
https://photos.google.com/photo/AF1QipNDcAQwgJjOjLkuR3GAwl2TW45vjadiCkPMzAg