Thanks to JL for the information, I got to know about Free Tree Society KL and eventually went for the activity on one fine Saturday morning.
They welcome volunteers to help out in their garden every Tuesday and Saturday.
Do follow their facebook page for more updates.
They are going to do giveaways next Saturday. Please check out if you're interested.
Tadpoles and guppies to be adopted too.
Clearing this part of land for water tank.
Such a lovely garden.