[Bilby]

Organic Growing is essentially a case of substitution.

Fertilizers that are allowed:

Blood & bone, Charlie Carp (R), compost,rock phosphate, various manures,green manure crops,mushroom compost and worm castings.Pig or human manures are not recommended unless used to grow comfrey.

Fertilizers that are not allowed
Synthetic chemical types.These are usually a powder that is disolved in water.There are also some slow release pellets.Probably not as bad for the soil but still not classified as organic.The problem with fast acting chemical fertilizers is that they kill all the micro-organisms in the soil.

Soil conditioners that are allowed:
Gypsum, lime, dolomite and sulphur.

Other soil improvers that area allowed:
Perlite, vermiculite, coconut husk fibre (often called Coir)

In Australia, it takes three years to get certification.