[MAIPC] Invasive plants and climate change

Mon Feb 4 09:02:07 PST 2019

I think Italian Arum Is certainly one of them also, good thought!  I have been seeing it for the last 10yrs at least  (first in Rock Creek Park in DC)…now I’m finding it in many of our stream valley parks as well as some of our neighborhood parks here in southern Montgomery County.  I’ve seen it on hillsides as well as in flood plains.  It’s a tough one to get rid of even with herbicides.

Mimosa is something that we don’t see a great deal of here in Montgomery County but I know it is highly invasive along creeks/rivers, wetlands etc down south (N. Carolina, S. Carolina, parts of Virginia etc.).  I suspect that the little that we do find here, probably wasn’t here not too long ago.   I think this one has the potential to get worse, as it is a prolific seeder, already thrives in warmer climates, our area already is getting warmer as time goes on and the plant has not become any less attractive to those looking to plant an aesthetically pleasing tree.  My next door neighbor has one planted in the middle of is front yard.

I haven’t seen too much butterfly bush here in Montgomery County, but I have seen individuals coming up that were not planted but were in close proximity to more mature individuals that may have been planted in a landscaped bed. I can see this one spreading as the climate warms up, just hope it doesn’t get way “out of control”.

*One other that comes to mind could be Chinese Privet.  This is HIGHLY invasive down south from Western Tennessee to  GA, AL, SC, NC, VA and probably beyond.  I have seen it here in Maryland but not in huge patches like down south.  The patches here seem to be more sporadic, stick to a few stream valley park systems that I can tell, and seem to be more in the southern part of the county.  I could see this species spreading considerably if temperatures region wide were to continue to rise.

*this is all just personal opinion and observation, not proven scientific fact.  Just figured I’d share my thoughts.

From: MAIPC <maipc-bounces at lists.maipc.org> On Behalf Of Rod Simmons
Sent: Saturday, February 02, 2019 1:18 PM
To: frazmo <frazmo at gmail.com>
Cc: MAIPC Listserve <maipc at lists.maipc.org>
Subject: Re: [MAIPC] Invasive plants and climate change

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%7CRobert.Servis%40montgomeryparks.org%7C50f1474af1154d1f476108d6893ac8d2%7Ca9061e0c24ca4c1cbeff039bb8c05816%7C0%7C0%7C636847282922269189&sdata=g5yIK17Ys6u70ctrbncBC8zajPMEDftoSbol7wQCj%2FM%3D&reserved=0>

_______________________________________________
MAIPC mailing list
MAIPC at lists.maipc.org<mailto:MAIPC at lists.maipc.org>
http://lists.maipc.org/listinfo.cgi/maipc-maipc.org<https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Flists.maipc.org%2Flistinfo.cgi%2Fmaipc-maipc.org&data=02%7C01%7CRobert.Servis%40montgomeryparks.org%7C50f1474af1154d1f476108d6893ac8d2%7Ca9061e0c24ca4c1cbeff039bb8c05816%7C0%7C0%7C636847282922279203&sdata=cMU%2BzmkNNsC5dZTH03UBttQr2LA7czbJfBC4Zfom%2FYc%3D&reserved=0>
_______________________________________________
MAIPC mailing list
MAIPC at lists.maipc.org<mailto:MAIPC at lists.maipc.org>
https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Flists.maipc.org%2Flistinfo.cgi%2Fmaipc-maipc.org&data=02%7C01%7Crod.simmons%40alexandriava.gov%7C5d4356aea292455e852a08d689397ebd%7Cfeaa9b3143754aeeadccc76ad32a890b%7C0%7C0%7C636847277376665782&sdata=1%2Fhc3LVR8pUnUQ15NTubjUxzeksRdJQk3jkl2Ck%2BHEY%3D&reserved=0<https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Flists.maipc.org%2Flistinfo.cgi%2Fmaipc-maipc.org&data=02%7C01%7CRobert.Servis%40montgomeryparks.org%7C50f1474af1154d1f476108d6893ac8d2%7Ca9061e0c24ca4c1cbeff039bb8c05816%7C0%7C0%7C636847282922299218&sdata=%2B8HV8JunFnIpECa5vprF3lcMw01BROgT%2FvUCyfVzkAw%3D&reserved=0>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.maipc.org/pipermail/maipc-maipc.org/attachments/20190204/e883ebb7/attachment-0001.html>