Why are barberry bushes and burning bushnow being considered invasive

Where did you hear that information.

it is a well known fact because the birds eat the berries then fly all over the state and further depositing the digested seeds to germinate where ever dropped there quickly crowding out our native plans many states now have banned their plantings along with Bradford Pear trees Bamboo and a lot of other pest labeled invasive plants

I have had both. Both are very pretty with color. The barberry bushes have berries on them that the birds love. They eat them and poop them out spreading the seeds. I had 3 barberry bushes to start with and ended up with at least 6 extra bushes. I don't live there anymore but they need to be kept under control. The burning bushes also have the berries that drop around the bushes and I had little burning bushes by the hundreds growing underneath and around them. If you can just keep an eye on them and maintain the growth, they are worth having. I had both red barberry bushes and the lime barberry bushes. Both added so much color to the garden area.