Attached Link: http://www.renderosity.com/viewed.ez?galleryid=284026&Start=19&Artist=pmoores&ByArtist=Yes

The link ive included is for a older pic im not planning on modifying. The one im rendering right now is of similiar angle and theme though more complex. The areas im concerned of are the bare ground materials areas near the water and around the other objects. I dont have a clue how to do it but would like to learn to 'fill' in those areas with random vegetation. Sorta along the lines of a high altitude pic of the brazilian jungle etc. Any tips appreciated, or links to tutorials. Ive done some searching tonight but nothing so far.