All non E-On/Cornucopia Solid Growth plants are variations on other SG-plants (either bought or distributed with Vue). Nobody outside E-On has access to the tools to create from scratch SG-Plants. Nobody has also the exact recipy of Coke (:biggrin:)

Non SG-plants are done usually with XFrogs; plant packs for XFrogs costs usually so much that if you need more than a handful of them you are better off buying XFrogs. As free alternatives you might check Arbaro and ngPlant whch are nearly all that it is available (plant generation is a field in which there is even less competition than terrain generation).

GIMP 2.7.4, Inkscape 0.48, Genetica 3.6 Basic, FilterForge 3 Professional, Blender 2.61, SketchUp 8, PoserPro 2012, Vue 10 Infinite, World Machine 2.3, GeoControl 2