Have you tried using the humidity, temperature and soil moisture sensors individually?
Which microcontroller do you intend to use?
What have you tried so far?
If you have, please post it with proper description and code tags if there is a code.
If you haven't tried anything, following links should get you started.
http://www.ijircst.org/DOC/4_%20IRP550417f6e21-d591-4709-8fdc-a61d6f2875e4.pdf