The Latin name for Bloodroot, Sanguinaria canadensis, comes from the Latin word for "bleeding". This describes the red-orange juice that comes from the stems and leaves, used in many cultures as dye and insect repellent.
Bloodroot may help get rid of warts because it contains skin-irritating chemicals that can dissolve tough skin tissue. A book I have called The Herbal Drugstore says that you can apply the juice of the plant directly to the wart, or you can make a paste from dried root powder and water, applying this paste once or twice a day and covering the area with a gauze bandage. I would take this with a grain of salt though. There are powerful bloodroot-containing salves (commonly called "black salves" or "drawing salves") being sold out there that claim to remove moles and skin tags, and "draw out"cancer. I have some friends who tried using these salves, and it worked to remove the mole but left HUGE, terrible scars. For this reason, I would never use black salves. In addition, studies have shown that using a corrosive cancer salve on lesions may remove superficial cancer but leave behind part of the cancer, which then comes back. I'm a huge fan of using herbs for medicinal purposes, but only when the pros outweigh the cons.
Will I try using bloodroot on a wart? I might try a tiny bit of fresh juice on it, but I'd stay away from the paste.
Normally I like to be upbeat and positive when talking about foraging and using medicinal herbs. I like to write about how great they are, how all-natural and how frugal they are. But in some cases it may be best to just appreciate a plant at arm's length.
Herbs can be very powerful, so use with caution!.