Answer:
The Tree Festival, popularly known as 'Van Mahotsav' is a week-long festival celebrated from July 1 to 7 (the first week of July) during which millions of trees are planted all over India. It was initiated in 1950 by K.M. Munshi, the Union Minister for Agriculture and Food at that time.
It was started to create awareness in the mind of the people for the conservation of forests and planting of new trees. Van Mahotsava is celebrated as a festival of life. In India, it was started as a movement to save mother earth.