Can someone identify this weed?

rockrose(Z5)August 25, 2013

It's now over 12 ft tall with square stems, large leaves, no flowers, some seedlike formations . I live in Maine. I thought at first that it was from commercial bird seed, as it sprouted up close to bird feeders.

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hortster(6a, southcentral KS)

Compare to marshelder, Iva xanthifolia.

hortster

    Bookmark   August 30, 2013 at 2:24PM
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