If Ketu (South Node) is giving negative energies and vibrations, badly placed and not favouring the individual and delivering ill effects, then the individual is advised to wear this root of Ashwagandha also known as Withania somnifera.
After getting the jadi of ‘Ashwagandha’, on Tuesday or Thursday morning purify it with Ganga jal and do puja by offering dhoop, deep, flowers and chanting the Ketu mantra. Then wrap it in the blue colour cotton cloth or thread and tie it to the right arm.
Alternatively, you can also perform the above puja during any of the Constellations / Nakshatras of Ketu – Ashwani, Magha and Mool.
Mantra: “Aum Sraam Sreem Sroum Sah Ketave Namah”.