Tulsi
Tulsi is a very sacred plant in hindu mythology. its been blessed that a leave of can remove all impurities hence cure all illness.
Tulsi plant when placed in North East corner of house brings lot of prosperity to the in mates.
Every Friday pray tulsi with little bit of milk and water to ward of vastu dosh of house.
If tulsi plant is kept at centre of the house then too vastudosh of house is nullified.