Field Guide to Jetty Island

July 10, 2011
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Black cottonwood Populus trichocarpa Jetty Island has few trees because its sandy soil lacks the necessary nutrients. An exception is the tough black cottonwood, a quick-growing deciduous tree in the willow family. It’s so tough a hewn stump floated to the island recently and was still sprouting new branches and leaves. Spot a thicket southwest of the dock. (Annie Mulligan / For The Herald)

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