Pretty! But invasive. Photo: Mitchell Byars/Axios Boulder
You might notice a bright pink flower adding color to the shores of Boulder Creek this summer, but beware: They're an invasive species.
State of play: The broad-leaved sweet pea may be pretty, but its vines can choke out other native wildlife, and their pods are actually toxic to humans and pets.
So reluctantly admire from afar, and definitely don't take the pods home to replant.
