commercial crops

Dear Members, Im looking for your valuable feedback & inputs on crops like Malabar Neem & SilverOak or any other similar crop where the crop needs less maintenance & gives decent profits after certain years of cultivation. Please also mention the type of soil, water & time period required...

What are the different available options in commercial crops in the various regions of the country on small lands ? Also is there any restriction involved in using a piece of land available anywhere in India to be used as commercial farm land even for growing commercial flowers ?