Aliases: Rhodotypos scandens
Last Seen: Traveled from Asia to the U.S. as an ornamental shrub in the rose family. Now seen escaping from yards into natural woodlands along the east coast and midwest, where it shades out native plant species.
Description: This shrub can grow up to 6 feet tall. Leaves are opposite along the stem, have deeply-serrated edges and are rough to the touch. White, four-petaled flowers appear in the spring and are replaced by 4 dark blue to black berries in the fall.
All is not rosy with this shrub. While not yet widespread throughout the state, some counties have invasive populations of this plant. No matter where you live in Pennsylvania, this is one shrub to keep your eye out for. If you start to see jetbead shrubs filling in your woodland understory, it is time to get rid of it. Small plants can be dug up by hand; larger ones may require the use of an herbicide.
For more information on jetbead, go to: www.na.fs.fed.us/fhp/invasive_plants/weeds/black-jetbead.pdf.