Every person born on earth belongs to any one of these 27 stars/Nakshtra or Rashi or Navgrah. With the knowledge of exact time of birth, the association can easily be found out with the help of an astrologer. So the presence of the complete set of these trees directly creates a healthy and sound human beings and those who take care of these trees as per their star signs are said to have good and positive effect on their lives due to the adoption of the trees.