Found out what it is...
Its called Bitter Dock (Rumex obtusifolius). Rumex obtusifolius - Wikipedia, the free encyclopedia
"Broadleaf dock is considered a weed and is slightly poisonous. It is designated an "injurious weed". Livestock have been known to get sick after feeding on it. But eradicating the plants is difficult.
The perennial plant can have a deep taproot reaching 5 feet down
. Also, the milk of the plant has been known to cause mild dermatitis.
Seeds have toothed wing structures, allowing them to be dispersed by wind or water, and also allow them to attach to animals or machinery to be spread great distances. They can lie dormant for years before germination, making vigilant pulling or tilling essential.
First year plants can seed, making early detection important for eradication.
The main weaknesses of Broadleaf are its poor competition, crowding causes flowering to be delayed for up to three years, and its susceptibility to disturbance. Frequent tilling will disrupt roots and kill seedlings and even older plants. The plant also thrives in moist environments and improved drainage can also help control its growth." http://missouriplants.com/Greenalt/R...lius_plant.jpg