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Invasive Species
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  They come quiet and unassuming... then they choke, ravage and rob native plants and ecosystems of valuable nutrients. We’ll learn more about these pestiferous plants, where we find them, what people are doing to get rid of them and why invasive species have become such a problem in the state. Guests
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We run a small garden center in western New Hampshire on the Connecticut River. In regards to invasive species we were proactive in eliminating our inventory of the three big species; Euonymus alatus ( Burning bush), Berberis thunbergis ( Japanese barberry ) and Acer platanoides ( Norway maple )prior to the state mandated deadline of January 1, 2007. Despite the publicity regarding this law we still receive requests from New Hampshire residents looking for these plants. We tell them we cannot grow or sell these plants anymore and their response is " Oh well I'll buy them ( business not to be named) in Vermont." I am frustrated with the situation in terms of our business, but I am also disturbed that people would sidestep a law such as this.
My neighbors property is overrun with Bamboo that Doug just mentioned. it is starting to come over to my property. It is coming down the drainage ditch along the state road we live on. What can be done to stop this? Do poisons work or other alternative?
Help!
Thank you
Matthew J Butt
please do not pull or cut knotweed unless you are aware of the legalities and processes of disposing of the remains. manual control of knotweed is labor intensive and only shows results over several years if methodology is consistent and infestation is not extensive. pesticidal control is the best control method and you may contact the nh division of pesticide control for a list of products which can successfully treat knotweed and are registered in nh. if you would like to do some research of your own, the western counties of washington state have been successfully treating this invasive species for some time and have begun to show great results.
One invasive we have experienced is called Canadian Bedstraw. It takes over hay fields, ruining the crop. Yet I have heard nothing about controlling it, eliminating import of it (apparently it comes in on Canadian hay). Why has this one been ignored?
I am currently on a mission to eradicate all the 'bamboo' that exists on my farm. We moved to this home 2 years ago and I noticed this invasive plant immediately. I am applying Ortho Max Poison Ivy and Tough Brush Killer many times with only moderate success. Do I need to dig up the roots? Please advice...I am determined to get rid of them!
Natacha Sochat Weare NH
Thank you for the show on invasive species in NH. I have been wondering what plant I've been battling along the road at the front of my property. The town comes through every year to mow this weed down along the street, but that only suppresses the weed; it does not eradicate it. Yes, it is Japanese knotweed! My kids have even helped dig up the rhizomes. We haven't completely eradicated our patch, but we're reduced its size and will continue to battle as long as we have to!