1. "A pit has to be dug, and its dimensions depend on the available space. Before digging the pit, the list of tree species should be chosen judiciously. As there is very little space to work around with, trees with varying heights should be chosen. For example, if a tree that can grow up to 30 feet is planted, the next one should be considerably shorter. This ensures the branches don't clash," says Krishna Kumar Suresh.
  2. Fill it with one layer of compost, followed by a layer of natural waste such as bagasse and coconut shells and then top it with a layer of red soil.
  3. Plant the saplings following interval and tree height specifications.
  4. The whole process can be completed in two to three weeks. The saplings have to be maintained regularly for a year.