Smartweed, Polygonum spp. Seedling leaves dull green, oval, 1.5 to 2 times as long as broad true leaves larger, more pointed Mature plant roots and shoots can develop at stem joints lying in water curled leaves emerge tearing membranous tubular sheath at base of previous leaf erect, 4 to 5 feet tall, or creeping with weak ascending stems stems red, swollen at nodes leaves long and narrow, with white undersides flowers white to pink, borne on stalks in long, dense clusters Management Fall cultivation of levees Herbicides, properly timed

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Modified: 11 Sep 1997 Comments to jayoung@ucdavis.edu