[APWG] Giant Hogweed

[Melissa Bravo]

Well.. I can speak on this. The PA program to eradicate was quite successful. So successful I eradicate myself out of my contract job in 8 years LOL - I was mostly funded by hogweed money and we moved that money to NY. We released more than 75% of the sites in PA as eradicated in 2012 if I recall my summary.  I don't know where the program stands now, they have not published any press releases on it since I left. 

      Bravo, M. A., J. Zoschg Jr. and I. Bowers. 2005-2012. Giant Hogweed Eradication Program in Pennsylvania and Surrounding States. Proc. WSSA: 47:226

Bowers,I.D., M.A Bravo, and J. Zoschg Jr., 2011. Improving Survey Methods for theDetection of Giant Hogweed in Pennsylvania. Proc. NEWSS: 65.


To answer your question: 
Just the image I saw in this t.v. clip showed me a landscape planting. I.e. so, I might assume it was relocated or a purposeful planting. Only Heracleum mantegazzianum is regulated in the trade - any other H. species can be purchased. They are quite similar unless you know how to compare them. Les Mehrhoff and I learned alot from each other looking at the various cultural and escape populations. 

In my opinion, as the former hogweed program manager, it is still an escape from cultivation issue as opposed to a naturalized problem - unless it has made its way  into a flowing riparian area. Then it moves fast. 

In the 8 years I surveyed, researched and studied the archives and neighboring states I found it unlikely in southern climates. By the way, I was getting ready to publish that 8 year program's findings when the funding for the PA position ended. NY adopted our protocols. They had considerably more infestations due to climate and length of time in the state. Records show many of the escape populations in NY date to the early 1900's. 

I still have all my data and publications if anyone wants to pay for the time/cost to publish the PA program. A national review on hogweed state by state.... . Invaluable in my opinion. So too would be the PA Kudzu program data and what has since gone on in NY etc... and then their is the goatsrue control program in PA that is still ongoing. 

Feel free to give me a call if you've any other questions. MB. 

Melissa A. Bravo, M.S. CCA, Agronomist Meadow Lake Farm Consulting Services 814-574-4067 / bravomelissa at yahoo.com https://www.linkedin.com/in/melissa-bravo-76991788





 

    On Wednesday, June 20, 2018, 9:40:10 AM EDT, Marc Imlay <ialm at erols.com> wrote:  
 
 
https://www.cbsnews.com/news/giant-hogweed-plant-causes-blindness-third-degree-burns-discovered-in-virginia-other-states/  The dangerous plant also grows in New York, Pennsylvania, Ohio, Maryland, Oregon, Washington, Michigan, Vermont, New Hampshire and Maine.

  

How successful have our programs been in reducing the amount of giant hogweed? How well are we using our success data to help obtain support for our invasive species control programs? 

Marc Imlay, PhD, Chair, MAIPC Biological control working Group,  MD Chapter Sierra Club Natural Places Chair. 

Conservation biologist, Park Ranger Office, Non-native Invasive Plant Control coordinator. 
(301) 442-5657 cell  ialm at erols.com
Natural and Historical Resources Division
The  Maryland-National   Capital   Park  and Planning Commission
www.pgparks.com  

  


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