If you’d like proof that introduced plants displace native ones, look behind the historic H.A.W. Tabor Home on Fifth Street and talk to tour guide and caretaker Mike Bradley. According to Mike, last year the area was full of Icelandic poppies, which are Rocky Mountain natives (the smaller, usually yellow ones). This year the area is virtually all dandelions. The two species of extremely jagged-leaved dandelions are very aggressive when introduced. If you need to grow them, it would be darned nice if you’d just prevent their going to seed – which can be difficult.
With plant and animal species now dying out at unprecedented rates (It’s called the Sixth Extinction), maintaining our natural biodiversity is no longer an issue to be ignored.
Our pollinators don’t need introduced plants. They didn’t evolve with them.