Puncture Vine or Goat Head Weed or I have even heard it called Devil’s Weed (Tribulus terrestris) is showing up in Northern Colorado! Oh yay. The seeds or burrs of this weed easily puncture bike tires (hence the name!), you, and doggie paws. I think this is the weed I hate the most. This pesky weed can grow up to 3 feet and because it seeds stick to anything and spreads quickly. Once established it is hard to eliminate so nip it early! You can pull it out when young, but once its’ flowering and producing seeds, it will keep coming back over and over again even in the same season because the seeds will continue to germinate.


