"Organic" means many things to many people. For instance to a chemist
"organic" means the matter is attached to a carbon molecule.

If you were to follow the true definition of an "organic garden" you
would only use fertilizers of natural source (ie bloodmeal, bonemeal,
manures etc). If you were to use synthetic fertilizers (such as
10-10-10 or 20-20-20) you would not be "organic" gardening.

Dave