Butterfly Bush - on the Invasive "Watch" list for PA
One of the brochures I picked up at the PA Farm Show discussed invasive plant species in PA and I was suprised to find a few of the plants I was growing in my yard on the list of situational invasives. Specifically we have English Ivy and Periwinkle.
Invasive plants are those which are not native to the area but have been introduced either directly by planting or indirectly by seed spreading and are agressively spreading into areas and threatening the native ecosystems.
The brochure I have was put out by DCNR and you can see their information online here. This listing is somewhat different and does not include situationally invasive plants. They are right out there with the rest of them. This list also includes a watch list which includes one of my favorite plants – the butterfly bush.