[MAIPC] Invasive plants and climate change

Fri Feb 1 10:43:34 PST 2019

Miscanthus and Pennisetum are both problems in coastal Delaware but I would
add that they spread primarily from being planted, then the seeds are wind
blown. Regarding Phrag, some areas here have given up on eradication, and
are now concentrating on managing it, if that’s even possible. We are very
prone to flooding, though, so with sea level rise which we are living, it
will be interesting to see it move as it doesn’t tolerate standing water.

Excellent point about Baccharis spreading due to road salt! I see it in
many more places recently.

Liz

On Fri, Feb 1, 2019 at 1:14 PM Judy Fulton <jfulton5 at gmail.com> wrote:

> When people mention groundsel tree, I'm assuming that they are referring
> to Baccharis halimifolia. This species is a native to the Coastal Plain
> ecoregions throughout the mid-Atlantic, but it is becoming adventive in the
> Piedmont and various mountain ecoregions. I agree with Margaret Chatham
> that a likely reason for this movement is salt tolerance -- I see the plant
> fairly frequently in the difficult strip next to highways that have been
> treated with salt. So, I'm not sure that Baccharis halimifolia is going
> to become a problem.
>
> Judy
> ____________________________________________
>
> Judith P. Fulton
> EcoPlant Consulting: Native and Invasive Plants
> Master Gardener, University of Maryland Extension
> Chair, Maryland Invasive Species Council Subcommittee on Invasives Lists
> Board, Mid-Atlantic Invasive Plant Council
> 410-337-3701
> jfulton5 at gmail.com
>
> On 2/1/2019 12:07 PM, MARGARET L CHATHAM wrote:
>
> I’d suggest another factor at work in the spread of groundsel tree (and
> Typha angustifolia): road salt. As the roadways become saltier, they offer
> better habitat for salt-tolerant plants. (And Ii see Miscanthus spread as
> primarily driven by planted seed sources — strictly anecdotal comment.)
>
> Margaret
>
> On Feb 1, 2019, at 11:42 AM, Stephen Hiltner <stevehiltner at gmail.com>
> wrote:
>
> I'll chime in with a few observations. The first invasive example of
> Miscanthus I saw many years back was in a field outside of Newport, Rhode
> Island during my one and only visit there. In NC at turn of the century it
> was only invasive on Mount Mitchell and some horticulturist of great
> stature, perhaps the one who wrote "the book" on shrubs/trees, said in a
> discussion at NC Bot Gardens that only one variety of Miscanthus was
> invasive. In recent years I've seen examples of invasion in NJ and PA along
> freeways.
>
> Groundsel tree is one to look out for, as it spread from the NC coast up
> freeways into the piedmont and has become a serious invasive in the Durham,
> NC area, invading grasslands and lining freeway right of ways. Seen a few
> incidents in central NJ but not much yet.
>
> Go to Princeton battlefield, and it's hard to imagine porcelainberry
> getting any worse--topiary on a massive scale.
>
> Steve
> PrincetonNatureNotes.org <http://princetonnaturenotes.org/>
>
> On Fri, Feb 1, 2019 at 10:55 AM Liz Nalle <liznalle5 at gmail.com> wrote:
>
>> Here in southern, coastal Delaware, Phragmites australis and Hydrilla
>> verticillata are big problems. I’m not sure how much climate change has
>> facilitated their spread, but they are from father south in Asia I believe.
>>
>> Liz Nalle
>> Inland Bays Garden Center
>> Frankford DE
>>
>> On Jan 31, 2019, at 9:36 PM, Jil Swearingen <jilswearingen at gmail.com>
>> wrote:
>>
>> All,
>>
>> EDDMapS might be enlisted here to help. If one can do a query over time
>> (e.g., 20-30 years) of invasive plant species occurring in the Southeast
>> states that eventually start being reported in the mid-Atlantic in recent
>> years, that would produce a list to start working with. Chuck Bargeron
>> would be the obvious go-to person to run this query. I don't know how to do
>> it with the tools available for users.
>>
>> Thanks,
>>
>> Jil
>>
>>
>>
>> .......................
>> Jil Swearingen
>> Invasive Species Consultant
>> *In the Weeds*
>> 410-200-7085
>>
>>
>>
>>
>> On Thu, Jan 31, 2019 at 9:22 PM James Remuzzi <
>> james at sustainablesolutionsllc.net> wrote:
>>
>>> I would second the USDA work on CO2 re vines would add Mile a Minute to
>>> those species previously mentioned —vines: both invasive and native, have
>>> exploded in last 20 years and are having a devastating impact on Native
>>> Forests and Shrublands.
>>>
>>> JRR
>>>
>>> James R. Remuzzi
>>> Sustainable Solutions, LLC
>>> www.sustainablesolutionsllc.net
>>>
>>> On Jan 31, 2019, at 4:27 PM, frazmo <frazmo at gmail.com> wrote:
>>>
>>> Lewis Ziska with USDA has done interesting work about the worrying
>>> effects of rising CO2 levels on invasive vines (plus native Poison ivy). My
>>> sense is that Kudzu is gradually becoming worse in the northern
>>> mid-Atlantic as things warm. Colder temps used to hold back Hedera helix in
>>> our north but that obviously is changing. I'm sure there is a long list of
>>> southern invasives marching toward us now... Cheers,   Steve Young,
>>> Arlington VA
>>>
>>> On Thu, Jan 31, 2019 at 10:10 AM Ossi, Damien (DOEE) <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 <http://www.doee.dc.gov/>
>>>>
>>>>
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