According to VIC Law for the charge of Cultivation of narcotic plants - commercial quantity,

Drugs, Poisons and Controlled Substances Act 1981 - SECT 72A

Cultivation of narcotic plants-commercial quantity

72A. Cultivation of narcotic plants-commercial quantity

A person who, without being authorized by or licensed under this Act or the regulations to do so, cultivates or attempts to cultivate a narcotic plant in a quantity of a drug of dependence, being a narcotic plant, that is not less than the commercial quantity applicable to that narcotic plant is guilty of an indictable offence and liable to level 2 imprisonment (25 years maximum).

According to VIC Law for the charge of Cultivation of narcotic plants - commercial quantity,
25 years

(a) The accused intended to cultivate narcotic plants in a commercial quantity.

(b) The plants are narcotic plants.

 

(a) Factual dispute.

(b) Honest and reasonable mistake of belief.

(c) Lack of intent.

(d) The accused was authorised, or held a relevant licence.

(e) Quantity less than a commercial quantity.

County Court.