Last verified: March 2026
Medical Patients: 5 Plants, Enclosed and Locked
Under the CRTA (410 ILCS 705), registered medical cannabis patients may grow at home under strict conditions:
| Who can grow | Medical cannabis patients only (registered with IDPH) |
|---|---|
| Plant limit | 5 plants over 5 inches tall per patient |
| Size threshold | Only plants over 5 inches count toward the limit — seedlings and clones under 5 inches are not counted |
| Growing area | Must be in an enclosed, locked space |
| Visibility | Plants must not be visible from any public area without the use of binoculars, aircraft, or other optical aids |
| Minor access | Must be inaccessible to anyone under 21 |
| Gifting harvest | No. Home-grown medical cannabis cannot be gifted to others. |
The enclosed, locked space requirement is more specific than most states. A locked spare bedroom, a grow tent inside a locked room, or a locked greenhouse all qualify. An open backyard garden, even if fenced, likely does not meet the "enclosed" standard.
The easiest setup: a grow tent inside a room with a locking door. This satisfies the "enclosed" requirement (the tent) and the "locked" requirement (the door lock). Keep your medical card documentation readily accessible in case of any questions.
Recreational Home Growing: Prohibited
Illinois stands out among legal cannabis states by explicitly prohibiting recreational home growing. Adults without a medical card may not cultivate cannabis at home, period. The penalty is relatively mild:
- Up to 5 plants: Civil violation — $100–$200 fine, no jail, no criminal record
- More than 5 plants (without medical card): Criminal cultivation charges escalating with the number of plants
The $100–$200 fine for small-scale recreational growing is often described as a "paper tiger" — the penalty is so low that enforcement is minimal. However, the prohibition remains on the books and can be cited as a factor in other legal proceedings.
HB 3498: Recreational Home Grow Bill
HB 3498, introduced in the Illinois General Assembly, would legalize recreational home growing with the following provisions:
- 12 plants per household (up from 5 medical-only)
- Available to all adults 21+ regardless of medical status
- Same enclosed/locked area requirements as current medical law
- No registration or plant tag requirement
The bill faces opposition from the licensed cannabis industry, which argues that home growing undermines the regulated market. As of March 2026, HB 3498 has not advanced beyond committee.
Landlord and Property Restrictions
- Landlords CAN prohibit cultivation via lease terms, even for medical patients
- Landlords CANNOT prohibit legal possession of cannabis purchased from a dispensary
- HOAs may restrict or ban cultivation in their covenants
- Federally subsidized housing: All cannabis cultivation prohibited regardless of medical status
If your lease does not specifically address cannabis cultivation, the landlord would need to rely on general "no illegal activity" clauses. Since medical home growing is state-legal, this creates a gray area that has not been widely tested in Illinois courts.
How Illinois Compares
Illinois's ban on recreational home growing is unusual among legal states:
| State | Recreational Home Grow |
|---|---|
| Illinois | Prohibited ($100–$200 fine) |
| Michigan | 12 plants per household |
| Ohio | 6 per person, 12 per household |
| Colorado | 6 per person, 12 per household |
| Washington | Prohibited |
Official Sources
- 410 ILCS 705 — CRTA Home Cultivation Provisions
- cannabis.illinois.gov
- IDPH — Medical Cannabis Patient Registry
For in-depth cannabis education, dosing guides, safety information, and research summaries, visit our partner site TryCannabis.org