This is a perennial plant that grows quickly and is quite prolific. What is it? Is it a weed? Invasive? How do I get rid of it?
It may be Dracunculus vulgaris. We used to grow it for the beautiful markings on the stem. Dracunculus vulgaris - Dragon Arum -- Discover Life It should be easy to remove with a fork or spade. Other suggestion is Arisaema sp...but it seems rather early for that to be in full leaf. If you add a pic of the flower that might help with an id.
