While talking with a staff member at my local nursery this morning, they said Wisteria ( sinensis) and Burning Bush (Euonymous elata) are now banned for sale in Maryland as invasive species.

I did a quick search, and here is what I came up with:

http://mda.maryland.gov/plants...

Invasive Plant Lists and Requirements
Tier 1 Invasive Plants
The following plants are designated as Tier 1 invasive plants in Maryland April 11, 2016. Efffective immedicately a person may not acquire a new Tier I invasive plant. According to phase-in provisions these plants are subject to the restrictions below as of April 12, 2017.

Ficaria verna (fig buttercup)
Geranium lucidum (shining cranesbill)
Iris pseudacorus (yellow flag iris)


Restrictions - Except as provided below, a person may not propagate, import, transfer, sell, purchase, transport, or introduce any living part of a Tier 1 invasive plant in the State. These restrictions do not apply to the transfer, lease, sale, or purchase of real property on which an invasive plant is located.

Exemptions - A person may conduct a prohibited activity if:

The person receives approval from the Secretary before conducting the activity; and
The activity is for the purpose of:

Disposing of the invasive plant
Controlling the invasive plant
Using the invasive plant for research or educational purposes; or
Exporting the invasive plant out of the State.

Tier 2 Invasive Plants
The following plants are designated as Tier 2 invasive Plants in Maryland, effective April 11, 2016.
According to phase-in provisions, these plants are subject to the restrictions below as of July 12, 2016.

Euonymus alatus (burning bush)
Ligustrum obtusifolium (blunt-leaved or border privet)
Wisteria sinensis (Chinese wisteria)
Wisteria floribunda (Japanese wisteria)
Wisteria x formosa (floribunda x sinensis hybrids)


Restrictions

A person may not sell or offer for sale at a retail outlet a Tier 2 invasive plant unless the retail outlet posts in a conspicuous manner in proximity to all Tier 2 plant displays, a sign identifying the plants as Tier 2 plants. Required insignia can be found under Information for Nursery & Landscape Professionals on the right hand side of this page.
A person may not provide landscaping services to plant or supply for planting a Tier 2 invasive plant unless the person provides to its customer a list of Tier 2 invasive plants.



Penalties

The Secretary may impose a civil penalty not to exceed $500 for each violation.
Title 12 Criminal Penalties

Legal Authority: Md. AGRICULTURE Code Ann. § 9.5-101 et. seq.

I can attest to burning bush & wisteria invasiveness. Have had several projects aimed at eradicating them and restoring habitat areas. When we bought our current house, I immediately terminated two burning bushes and for 3 months have been trying to kill the wisteria and porcelainberry. In fact, this morning I was ripping out new sprouts once again.

I know a lot of folks love them...and they are pretty. A lot of folks think if they have not seen them pop up in other places in their yard that they are not invasive or they can be controlled. Not only is that an illusion, there is great expense in time and money to eradicate and what it does to a lot of natural plant communities cascades into animal communities. I have never understood how a lot of these plants can still be sold. BTW, Tier 2 restrictions basically don't amount to much if all one needs is a sign.

@UrbanWild,

Go to Lowes or HD and get a jug of Bayer Advanced Brush Killer. Cut the wisteria vines about 2 feet from the ground. Depending on how many you have, either put them into the jug, or pour the herbicide into a bucket or other suitable container. The plants will suck it up and die. The above ground stuff will die naturally and the underground, including any runners will be killed off by the herbicide. You can also spray it onto the leaves. BUT, if you choose to spray, make sure you do it on a wind-free day and that you can control the spray. Otherwise, you'll end up killing off something else as well. I've used it successfully on both wisteria and poison ivy.