As a individual how can I set up a small jungle where I can grow trees

As an individual how can I set up a small jungle where I can grow trees and set an example for others to do the same

You can also filter your litter, by separating recyclable wastes from non-recyclable ones.

Turn off the lights when not in use.

Close the tap after use.

Avoid using things that make use of CFCs.

Don't waste paper.

And more... I'm sure you can get many by using search engines.

You should investigate green walls and green roofs. An interesting way to re-vegetate urban environments.

As a individual how can I set up a small jungle where I can grow trees

Keep it COOL.. and for trees, buy an affordable land or join any environmental committee to help make jungles.