Also started some jungle savanna island type trees.
Some quick trees not representing any known species insired from here:
http://infinitythegame.com/forum/index.php?/topic/23337-quick-trees/
Quick tutorial steps from left to right.
Glue wooden golf tees to hardboard base (with bevelled edges). Some cut down to different heights before glueing.
Once dried in place, cover golf tee with hot glue for texture (right most tee on first base).
Cover with brown craft paint, dry brush a lighter tan colour, give a dark brown wash.
Drill holes with pin vice and stick branches in with superglue. Two rows of 3 stalks gives a nice lush top at least for these plastic branches.
Branches taken from cheap dollar store plants and cut into individual stalks.

Flock base (still need to do this as I haven't finalized choice for my game matt color)
Bamboo stands:
Cut out hardboard bases, glue together if want more height.
Cover with drywall/wood glue/sawdust mixture. dry completely overnight.
Bamboo ordered from China on EvilBay. Good prices. Cut to different lengths and use short cutoffs to represent new growth.
Drill holes in base, superglue bamboo stalks in place.
Flock base (still need to do this)
Will likely shoot it with some dullcoat too.
Idea of what it should look like
