Invasive plants are considered innocent until proven guilty. By then, they are out of control and cost millions to eradicate when possible. Why allow nurseries to sell invasive foreign species. At least labeling should be required. Simple testing first would save billions.
Why is this important?
I bought Scotch Broom and now have to spend the rest of my life trying to rid my property of it. If I had known it is a take-over horror that interferes with natural plants, animals, birds, sidewalks and parking lots; it gravitates and fills clear cuts and that the seeds last 100 years I wouldn't have bought it.