I dont know if others have found this, Plant studio was originally a commercial program that can be downloaded free from
http://www.kurtz-fernhout.com/PlantStudio/
I have made a Video tutorial which can be seen here…http://learnblender3d.com/2007/07/23/plant-generator-for-blender-3d-make-plant-models/
It makes low res models which can be exported/imported as vrml1
