eBay as an invasive plant vector: A quick glance at today's auctions showed tons of Russian olive (Elaeagnus angustifolia) and some autumn olive (E. umbellata) as well (hope it doesn't end up in West Virginia). You can also find Salvinia species, water hyacinth (Eichhornia crassipes) and at least two species of parrot's feather (Myriophyllum spp.). Granted, these plants are not going to be invasive everywhere they are introduced, and some sellers are very careful to note plants that are invasive. But while conscientious sellers avoid selling to states where species are illegal, many states that recognize they have a problem with certain invasive species don't currently back it up with legislation. While eBay doesn't police its auctions, if you see someone selling something prohibited, you can report it.