he panoramic composite photo above shows an existing Reed Bed Systems installation in Maryland.  Note the Reed Beds at the far left, and the open tanks in the center.  As noted, the prevailing winds run from left to right.  In fact, at this location the operator has found that the quantity of Phragmites seeds blowing into the open tanks was enough of a nuisance that, since these pictures were taken, they have attached a fine plastic mesh to the railings at the windward (left) end of the tanks.  At the far right of the photo is a low-lying area with a small pond and a marshy area.  While the marshy area has a healthy population of common cattail, Typha latifolia, it remains completely free of any Phragmites, even after years of having thousands of Phragmites seeds blow into it.

But don't take our word for it: below is a photo of the most densely vegetated portion of the marshy area, divided into eight slices..  If you click on any slice you will pop up an enlarged, high-resolution view so that you can more easily identify the plants.

Notes: 1) depending on your browser's ability to select different zoom levels you may need to cut and paste the images into a different viewer to effectively examine them; and 2) each slice is a .JPG file of a megabyte or two in size -- you may not want to open them unless you have a broadband Internet connection.