What counts as cultivating cannabis?
Drug Misuse and Trafficking Act 1985 (NSW), s 23: a person who cultivates, or knowingly takes part in the cultivation of, a prohibited plant is guilty of an offence. "Cultivate" includes sowing or scattering seed, and planting, growing, tending, nurturing or harvesting the plant.
The definition is deliberately wide. Watering a plant is cultivation. So is harvesting one you did not plant. And "knowingly taking part" extends the charge to people who provide the premises, finance the grow or assist any step of it — the property owner who knew what was in the shed can face the same charge as the grower.
What the prosecution must prove: that the plant was a prohibited plant (for cannabis, the whole plant — there is no THC threshold for a growing plant), that you cultivated it or knowingly took part, and — where a higher tier is alleged — the plant count. Knowledge is real territory in shared houses and on rural properties: plants on land you own or occupy are not automatically plants you cultivated.
Plant-count tiers and penalties
Cultivation is tiered by the number of plants, and the count sets the maximum penalty and the court:
- Small quantity — up to 5 plants: dealt with summarily in the Local Court; maximum in that jurisdiction 2 years' imprisonment and/or a fine of $5,500 (50 penalty units);
- Indictable quantity — more than 50 plants: maximum 10 years' imprisonment and/or a fine of $220,000 (2,000 penalty units), though matters below the commercial threshold can still resolve in the Local Court (2-year cap);
- Commercial quantity — 250 plants or more: maximum 15 years' imprisonment and/or a fine of $385,000 (3,500 penalty units); strictly indictable;
- Large commercial quantity — 1,000 plants or more: maximum 20 years' imprisonment and/or a fine of $550,000 (5,000 penalty units).
Those thresholds apply to ordinary cultivation. Grow indoors under lights, and they collapse — which is the next section, and the trap in this area of law.
Enhanced indoor cultivation — the same plants, a more serious charge
Drug Misuse and Trafficking Act 1985 (NSW), s 23(1A): cultivating cannabis by enhanced indoor means — indoors, using hydroponics, nutrient-enriched water, or artificial light or heat — for a commercial purpose attracts higher maximum penalties and sharply lower quantity thresholds.
The Act treats hydroponic and artificial-light growing as its own, more serious category. Two things change:
- The thresholds drop. For enhanced indoor cultivation, the commercial quantity is 50 plants (not 250) and the large commercial quantity is 200 plants (not 1,000). A garage grow that would sit in the indictable tier outdoors can be a commercial-quantity charge indoors;
- The maximums rise where a commercial purpose is proved. Cultivating by enhanced indoor means for a commercial purpose carries higher maximum penalties at every tier than ordinary cultivation — and where a child under 16 was exposed to the cultivation process, the maximums increase again.
The contested issues track those features: whether the setup actually meets the definition of enhanced indoor means, the true plant count (seedlings, clones and dead plants are all argued over), and whether any commercial purpose can be proved. Each can move the charge — and the realistic outcome — substantially.
"It's just a few plants for me" — where the personal-use line actually sits
The personal-use grower and the commercial grower are charged under the same section, and the line between them is drawn by evidence, not intention alone. A handful of outdoor plants, no scales, no baggies, no messages about sales — that matter usually stays in the Local Court, where the realistic range for a first offence runs from a non-conviction order to a community-based order, depending on the circumstances.
But the line is closer than people think. Plant numbers above the small quantity, a hydroponic setup, cash, packaging or message records each push the matter towards a commercial characterisation — and cannabis cultivated in quantity also exposes a grower to deemed-supply reasoning once it is harvested and weighed. The honest position: small personal grows are still criminal charges with real consequences, and they are also the matters where early, careful handling most reliably produces the least serious outcome. Every matter turns on its own facts.
Defences and answers to a cultivation charge
- Knowledge — plants on property you own or occupy are not automatically yours; the prosecution must prove you cultivated or knowingly took part;
- The count and the category — plant numbers, what counts as a plant, and whether the setup truly meets "enhanced indoor means" are all contestable, and tiers turn on them;
- Commercial purpose — where alleged, it must be proved, not assumed from the setup alone;
- The search — warrants, consent and the lawfulness of the entry are tested; unlawfully obtained evidence can be excluded under s 138 of the Evidence Act 1995.
How Lenz Legal approaches cultivation charges
Dean Lenz has defended cultivation matters across the full range — from single-plant Local Court matters to commercial hydroponic prosecutions. The first questions are always the same: is the count right, is the category right, and can knowledge and participation actually be proved against this client? Those answers determine whether the matter is defended, negotiated down a tier, or prepared as a plea in the Local Court with the strongest available subjective case.
Where the matter is small, the goal is proportionate: keeping a garden-scale mistake from becoming a conviction that follows you. Where the allegation is commercial, the matter is treated with the seriousness it carries — bail, the brief, the expert questions on count and category, and the negotiation, in that order.
If your property has been searched or police want to speak with you about plants, get advice first. "They're mine, it's just personal" feels like the safe answer in the moment; it is also an admission to every element of the charge, offered before anyone has checked what the prosecution can actually prove.
Cultivating cannabis — your questions answered
How many plants is a commercial quantity?
For ordinary cultivation, 250 plants (1,000 for large commercial). For enhanced indoor cultivation — hydroponics or artificial light indoors — the thresholds fall to 50 and 200. The growing method, not just the count, decides the tier.
Is growing for personal use treated differently?
It is still an offence, but small plant counts without supply indicia are usually dealt with in the Local Court, where outcomes range from non-conviction orders to community-based orders. Higher counts, hydroponic setups and any sales evidence move a matter quickly into more serious territory. Every matter turns on its own facts.
Does a medicinal cannabis prescription change anything?
No — and this is widely misunderstood. A prescription covers pharmaceutical cannabis lawfully supplied through the regulated medical pathway. It does not authorise home growing in NSW: cultivation remains an offence under s 23 regardless of any prescription, and the prescription is not a defence to the charge. It may be relevant context on sentence, but it does not make the growing lawful.
What is enhanced indoor cultivation?
Cultivating cannabis indoors using hydroponics, nutrient-enriched water, or artificial light or heat. It carries lower quantity thresholds (commercial at 50 plants), higher maximums where a commercial purpose is proved, and a further aggravation where a child under 16 was exposed to the process.