This is Yarrow, and you should become friends with her not try to "get rid of her." Remember, who shows up are the right ones. Sit with yarrow, enjoy yarrow's aroma and lovely white flowers, brew tea or beer with yarrow, take heart in knowing should you get cut badly yarrow can help stop the bleeding (Achillea is the genus because Achilles and his men took yarrow into battle with them). Yarrow's also medicine for soil (as all plants who show up tend to be), and is used in biodynamic preps. Whoa yarrow, what an ally!
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Video of all the PDC and ATC (~177 hours) - HD instant view