Tulsi is considered very important in architectural point of view. Vastu Shastra has been told that if the Tulsi plant is planted in the right direction, then it comes with peace and tranquility.
1- Tulsi should never be kept in the South-East direction in your home. The South-East direction is considered the direction of fire. It is not considered good to plant tulsi in this direction.
2- East-north direction is considered to be the element of water and south-west direction to be the element of earth. Tulsi relates to these two directions also. Therefore, it is auspicious to plant Tulsi in these directions.
3- Always keep in mind that never plant the basil plant in the ground. It should always be put in a pot.