I've got a bunch of these growing in my yard and they seemed to have shot up over night. They're really hard to pull out of the ground so before I pull up anymore I'd like to know what they are and what's the best way to get rid of them. I live in central Colorado if that helps. Thanks! Top of the stalks ( photo / image / picture from Jackiebrag's Garden ) Group of stalks ( photo / image / picture from Jackiebrag's Garden ) root ( photo / image / picture from Jackiebrag's Garden )
