Yellow dock has long curly leaves that appear to have been "crisped" at their edges. It bears multiple clusters of three-winged flowers. Its seeds are green in the summer but they become deep red as they mature.
The root of yellow dock bright yellow below the bark. The root is the part of the plant used in herbal medicine, harvested in late summer after the seeds have begun to turn red.
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This information is not intended to diagnose, treat, cure, or prevent any disease.