[MAIPC] Invasive plants and climate change

[Rod Simmons]

Excellent observations, Steve!  Agree with Mimosa.

Italian Arum is indeed starting the way Liriope did in the Washington-Baltimore region 20-25 years ago.  Both Liriope spp. are now to be found in every urban and suburban park and natural area.

We might also consider Butterfly Bush as an incipient analog, though yet unproven naturalizer, to Mimosa.

Thanks,

Rod


On Feb 2, 2019, at 1:08 PM, frazmo <frazmo at gmail.com<mailto:frazmo at gmail.com>> wrote:

One other one that belatedly came to mind is Mimosa. Not that it's one of our biggest issues. But anecdotally,  our normal DC-area winters used to get cold enough so that Mimosas seemed to get killed off pretty regularly.  Within the last 20 years my sense is that we aren't seeing nearly as much winter kill and more of them are popping up.

Off on a tangent, another possible confounder for invasives in general is micro-evolutionary selection pressure. As but one example, I think I see this going on literally under my nose with Italian Arum, where I think selection pressures are breeding the more aggressive spreaders. There are probably many other and better examples. Garlic Mustard? Lesser Celandine? Etc.

Cheers,  Steve Young,  Arlington VA

On Thu, Jan 31, 2019, 10:10 AM Ossi, Damien (DOEE) <damien.ossi at dc.gov<mailto:damien.ossi at dc.gov> wrote:
Question:  What, if any, invasive plant species appear to be spreading into the mid-Atlantic due to climate change?  I know there’s been talk of southern magnolia and other species that are native to just south of here starting to naturalize in our area, but I’m more interested exotic invasives.

What invasive plants are common in southern Virginia or northern North Carolina that we just don’t have in our area, but could move here with warmer climates?

Thanks,
Damien

Damien P. Ossi
Wildlife Biologist
Fisheries and Wildlife Division
Department of Energy & Environment
Government of the District of Columbia
1200 First Street NE, 5th Floor
Washington, DC 20002
Desk: (202) 741-0840
Web: doee.dc.gov<https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.doee.dc.gov%2F&data=02%7C01%7Crod.simmons%40alexandriava.gov%7C5d4356aea292455e852a08d689397ebd%7Cfeaa9b3143754aeeadccc76ad32a890b%7C0%7C0%7C636847277376625762&sdata=wx6f23jnlBSX93nbYJnLEfRLe2NrfmE2ASPeqI3Lhq4%3D&reserved=0>

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