What Is This Weed

Question

I left this plant because it looked like a teasel, it is about 5 feet tall with spiny leaves and non descript yellow flowers. Could it have come from the bird food?

• 
• 

Answer 1

That would be Helminthotheca echioides, or Oxtongue. It is considered invasive.

Probably spread by wind, but it could have come from anywhere.