In Portland's 4,800-acre Forest Park, for example, volunteers armed with shovels and shears go out each week to rip out vines and sever shoots that climb tree trunks. Their goal is to create ivy-free buffers around trees. Diedrich, whose organization formed in 1994 to lead the Portland charge against the invader, had lobbied hard for the noxious weed designation and is thrilled by the board's action, which was taken last week. Others aren't so pleased. Although only 20 of the 1,400 members of the Oregon Association of Nurserymen grow English ivy, hundreds of garden-supply businesses sell it.
People ask for it.
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