Here in Eastern Pennsylvania, some named invasives are so prevalent that most people don't know they don't belong here, multiflora rose, e. g. But from Jim's list, I have noted a variety of privet growing in the wooded margins of our stream, but it is not the type used for hedges. Water hyacinth is sold here but is not hardy. Lythrum infests the small islands in the Delaware River and is prevalent along its banks, but it is colorful in the late summer. Not on that list: Also, we have a great deal of autumn olive. And there are huge numbers of shrubby honeysuckles all over the place. Among geophytes that are becoming a problem are Ornithogalum umbellatum, if it is happy (and it is very hardy), and Iris pseudacorus which is making itself very much at home along waterways. It is sold in every garden center as a good pond plant. Here at my school, we have a well intentioned, self-styled, "tree hugger" who has organized the students to eliminate the invasive species so that the native species will return. They have cut down great swathes of multiflora rose along the stream, but they left the thorny branches which subsequently clogged the stream and caused flooding. Multiflora rose is very hard to eradicate, so "Eco-Man" proposes using Roundup to kill the roots. I am speechless! Dell -----Original Message----- From: pbs-bounces@lists.ibiblio.org [mailto:pbs-bounces@lists.ibiblio.org] On Behalf Of Jane McGary Sent: Sunday, August 02, 2009 12:51 PM To: Pacific Bulb Society Subject: Re: [pbs] Invasive species Jim Waddick posted a list of "100 of the World's Worst Invasive Alien Species" >according to the IUCN's Invasive Species Specialist Group reported at: > >http://k-state.edu/withlab/consbiol/…