It turns out that the Madison Ridge area is ground zero for the Giant Hogweed, a noxious weed that King County is trying to control. A number were found adjacent to the alley in 2006. (Link to the PDF I sent showing weed locations or a link to the place where I generated the map. http://dnr.metrokc.gov/wlr/LANDS/weeds/maps.htm)
The large plant whose “clear, watery sap has toxins that cause photo-dermatitis. Skin contact followed by exposure to sunlight produces painful, burning blisters that may develop into purplish or blackened scars.”
To find out how to identify Giant Hogweed and more about the rather interesting plant (it was originally imported as an Asian ornamental) go to this link http://dnr.metrokc.gov/wlr/LANDS/weeds/hogweed.htm
It might help if people posted sightings to this blog. Also King County will be checking out the alley in the near future to confirm that the plant has not returned.
-contributed by Alley Chatter George Divoky
The large plant whose “clear, watery sap has toxins that cause photo-dermatitis. Skin contact followed by exposure to sunlight produces painful, burning blisters that may develop into purplish or blackened scars.”
To find out how to identify Giant Hogweed and more about the rather interesting plant (it was originally imported as an Asian ornamental) go to this link http://dnr.metrokc.gov/wlr/LANDS/weeds/hogweed.htm
It might help if people posted sightings to this blog. Also King County will be checking out the alley in the near future to confirm that the plant has not returned.
-contributed by Alley Chatter George Divoky
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