It’s a complicated question and you’ll get different answers depending on who you talk to. Generally speaking, planting a North American native plant is better than planting an Asian or European plant even if that North American plant was only ever found two states away. If you are adjacent to natural areas, particularly natural areas in good condition, sticking with natives of your area is more important than if you’re in a concrete jungle or deep in suburbia. Plants native to your eco-region should perform the best and have the most benefits for local pollinators. How pure you decide to be with natives is up to you!