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invasives/ definition

Title: [GWL] invasives/ definition
on 6/21/02 11:37 PM, Marge Talt at mtalt@hort.net wrote:

> This thread, which discusses a topic that comes up on lists
> periodically, made me wonder just what everyone's definition of
> "invasive" is.  I have this feeling the word means different things
> to different folks.  What do you think it means?

Wayne Mezitt's recent post regarding the Weston Nursery article on the topic <http://www.westonnurseries.com/New_Site_Pages/Articles_INVASIVE.htm> defines it thusly:

"So, what really is an invasive plant? There is general agreement that there are certain characteristics that help qualify a plant to be ³invasive² in a particular area:
*       It is non-indigenous to the region;
*       It is widespread and has become naturalized in undisturbed areas;
*       It produces and disperses high numbers of seeds or propagules; and
*       It out-competes and displaces natural plants or fundamentally changes an ecosystem¹s functioning."

I'm certain that "invasive" means different things to different folks, all need fresh information on this important topic. For some of the latest developments, check the Missouri Botanical Garden site: <http://www.mobot.org/iss/>
--
Larry Maupin
Maupin Photography
Freelance Garden Writer/Photographer
Member, Garden Writers Assoc. of Amer.
larrymaupin@sbcglobal.net
Dallas, TX   214/341-3933
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