[MAIPC] Invasive plants and climate change
Ivmpartners2
ivmpartners at gmail.com
Fri Feb 1 19:27:42 PST 2019
Phragmites spreads primarily from disturbance, as roadside mowing promotes new rooting from every leaf node. It is best controlled with an herbicide treatment of a combination of glyphosate and imazapyr, followed by fire during the winter to remove the thatch layer. Then a touch up herbicide treatment the following year.
Rick Johnstone
> On Feb 1, 2019, at 1:43 PM, Liz Nalle <liznalle5 at gmail.com> wrote:
>
> 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
>>>>
>>>>> 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
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
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