There are various categories of drugs and definitions in accordance with the Controlled Substances Act 1984 (SA), which came into effect on 3 December 2007, and which applies to any offence which occurred on or after that date [see Controlled Substances (Serious Drug Offences) Amendment Act 2005 (SA)].
A controlled drug is a drug of dependence or a substance declared by the regulations to be a controlled drug (but does not include a controlled plant) [see Controlled Substances Act 1984 (SA) s 4(1) for definition].
A drug of dependence is a poison declared by the regulations to be a drug of dependence [see Controlled Substances Act 1984 (SA) s 4(1) for definition].
A controlled plant is a growing cannabis plant or a planted cutting of a cannabis plant (including placement into a growing medium) and any other plant declared by the regulations to be a controlled plant [see Controlled Substances Act 1984 (SA) s 4(1) for definition]. Of note, there no longer needs to be a root system.
A controlled precursor is any substance declared by the regulations to be a controlled precursor [see Controlled Substances Act 1984 (SA) s 4(1) for definition].
A prescription drug is a poison declared by the regulations to be a prescription drug [see Controlled Substances Act 1984 (SA) s 4(1) for definition].