[MAIPC] Fallopia japonica

[Marc Imlay]

We apply rodeo plus non-ionic surfactant in the little cup that forms at the base when sawed their at ground level. We use 20% glyphosate. We get 100% success with this method. 

 

 

Marc Imlay, PhD, Chair, MAIPC Biological control working Group Conservation biologist, 

Park Ranger Office, Non-native Invasive Plant Control coordinator.  <mailto:Marc.Imlay at pgparks.com> Marc.Imlay at pgparks.com

(301) 442-5657 cell  Natural and Historical Resources Division

The  Maryland-National   Capital   Park  and Planning Commission

 

 

From: MAIPC [mailto:maipc-bounces at lists.maipc.org] On Behalf Of Judy Fulton
Sent: Friday, September 02, 2016 12:00 PM
To: MAIPC <maipc at lists.maipc.org>
Subject: [MAIPC] Fallopia japonica

 

I was recently sent the attached two photos of what looks like Fallopia japonica (aka Polygonum cuspidatum and Reynoutria japonica), which were taken in May. Apparently, the homeowners, whose property borders Back River in Baltimore County near Rock Creek Park, Maryland, are quite pleased with their decision to plant “Japanese bamboo” to reduce erosion.

I’m concerned because Fallopia japonica can live in salt environments, such as salt marshes. I’ve been informed that the mouth of Back River is at the southern edge of the fresh water zone of the Chesapeake Bay with average salinity of 6 ppt, but salinity can range from <1 ppt to 10 ppt depending on weather conditions.  I’m assuming that the pieces of rhizomes that might break off in a major storm could survive in Back River to colonize other areas, especially if the storm reduced the salinity in the river. Does anyone know if this is correct? Also, would the seeds remain viable if they were transported to another location by Back River?

If the homeowners were convinced to remove their Fallopia japonica, what would be the best way to eradicate it so near the water? Something like Rodeo plus a non-ionic surfactant?  

Thanks for your advice.  

Judy

____________________________________________

Judith P. Fulton
Consultant, University of Maryland Extension
Master Gardener, University of Maryland Extension
Chair, Maryland Invasive Species Council Subcommittee on Invasives Lists
410-337-3701
jfulton5 at gmail.com <mailto:jfulton5 at gmail.com> 



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