This is part of 3 image campaign done by Heavy Artillery http://heavyartillery.com.
I was asked to create tropical jungle and grass in CG. iToo Software Forest Pack 4 http://www.itoosoft.com/ was used extensively. Rendering was done with Chaos Group V-Ray 2 http://www.chaosgroup.com/en/2/index.html.
Here's direct link to this work on Nike webiste: http://www.nike.com/us/en_us/c/nfl/jacksonville-jaguars
More information about the project and High-Res/Detail Images at: http://heavyartillery.com/portfolio/nike-nfl-jacksonville-jaguars/
Process video by Heavy Artillery: