Rumex species. Dock. For future reference it helps a lot if you give us your location. Luckily this one was easy because Rumex are geographically very widespread. Edible, but you’ll have to decide if it’s palatable.

Yes thank you. I forgot. I'm in zone 9a, southeast Texas.

i suppose.. with enough garlic and butter.. anything is edible.. including a flip flop ... lol ...

eat it or destroy it.. before it goes to seed ... or you will have hundreds or thousands more next season ....

ken

Hard to dig out - you're going to need something like a spade if you attempt it.