Draw a map of the park . Identify buildings, sidewalks, powerlines, buried cables, fences, existing trees, shrubs. Consider how your plan relates to the houses(will the tree you plant shade out someone’s vegetable garden?) Map sunny or shady sites, low or wet sites, sandy sites. Identify areas for pets, benches, pond,playing and paths. Also an area where a pit can be made where people throw their vegetable peels so that free organic manure is available. Ask the houses to keep a bucket near the kitchen sink and dump non-sudsy water in it (such as the fluid from canned goods or the water that a pan has been soaked with or the water that you was fruit or vegetables before eating) - this water can be dumped on the garden along with all your food scraps.
Trees should be drawn to a scale that represents three-fourths of their mature width and shrubs at their full mature width. This will help you calculate how many trees and shrubs you need. There is a tendency to include so many trees that eventually your yard will be mostly shaded. Be sure to leave open sunny sites where flowers and shrubs can thrive.

Its easy to make and maintain a park. You will not only enjoy yourself but save the world as well.

Maneka Gandhi