Tulsi is a heavy branched having hair all over. It attains the height of about 75 90 cm. It has round oval shaped leaves which are up to 5 cm long. The leaves are 2- 4 cm in length. Its seeds are flat. Its flowers are purple creamish in colour. The Tulsi with the green leaves is called the Shri Tulsi and one with the reddish leaves is called the Krishna Tulsi. Its seeds are yellow to reddish in colour. Leaves of Tulsi contains very essential oil.