We do have people visit from all over the world.* That's why it's helpful to add your location to your profile or note where you live when you suggest planting something that might be invasive in another country.* I find it helpful to know where someone lives when referring to plant material.* I hope you can get others in your area to plant more turkey vetch.
When weeding, the best way to make sure you are removing a weed and not a valuable plant is to pull on it. If it comes out of the ground easily, it is a valuable plant.