Can You Grow Cannabis at Home in Illinois? 2026 Rules

Can you grow cannabis at home in Illinois? Only if you are an Illinois resident, 21 or older, and a registered patient in the state’s medical cannabis program, and then only up to five plants per household. Status as of Oct. 30, 2026: that rule has been in effect since Jan. 1, 2020, and nothing enacted since, including the 2026 cannabis omnibus, has opened home grow to adults who are not patients.

Being allowed to buy cannabis does not automatically mean you may grow it. Here is who can grow, the conditions that apply, what happens if you grow without being a patient, and where a pending bill stands.

Who may grow cannabis at home in Illinois

The home grow rule is in Section 10-5 of the Cannabis Regulation and Tax Act (410 ILCS 705/10-5). It allows home cultivation only by a person who is all three of these:

• 21 or older. Medical patients under 21 can take part in the medical program, but they cannot grow.
• An Illinois resident. The law defines a resident as someone domiciled in Illinois for 30 days before starting to grow.
• A registered qualifying patient under the Compassionate Use of Medical Cannabis Program Act. Registration runs through the Illinois Department of Public Health’s Medical Cannabis Patient Program.

The state’s own cannabis FAQ puts it plainly: only registered qualifying medical cannabis patients may grow up to five plants at home. A patient growing under Section 10-5 does not need a cultivation center or craft grower license.

The rules for patients who grow

Section 10-5(b) attaches conditions to the privilege. In plain English:

• Five plants per household. Section 10-5(b)(1) describes the authorization as five plants more than five inches tall per household. Section 10-5(b)(7) separately says the dwelling, enclosed locked space or undivided property may not contain more than five plants at any one time. Do not treat the height language as permission to keep an unlimited number of seedlings. The household cap does not multiply with the number of patients.
• Enclosed and locked. Plants must be grown in an enclosed, locked space.
• Out of public view. Plants may not be kept where they are in ordinary public view, and the grower must take reasonable steps to keep them secure from unauthorized people, including anyone under 21.
• Seeds from a dispensary. Adult patients may buy seeds from a dispensary for home growing. Seeds may not be given or sold to anyone else.
• Your home, or with permission. Growing is allowed only on residential property you lawfully possess, or with the consent of the person who does.
• Only residents tend the plants. Only registered patients who live at the residence, or their authorized agent for brief periods, may tend the plants.
• No selling or gifting. Homegrown plants, cannabis and cannabis-infused products may not be sold or given away.

A patient who grows more than the limit, or sells or gives away what they grow, faces the penalties the law already provides, including under the Cannabis Control Act, and can lose home cultivation privileges under the state’s rules.

What if you are not a medical patient?

Growing without authorization falls under Section 8 of the Cannabis Control Act (720 ILCS 550/8), which scales the penalty by plant count:

• Five plants or fewer: a civil violation, with a fine of $100 to $200.
• More than 5, up to 20: a Class 4 felony.
• More than 20, up to 50: a Class 3 felony.
• More than 50, up to 200: a Class 2 felony.
• More than 200: a Class 1 felony.

Adults who are not patients can still buy and possess cannabis from licensed dispensaries. Since June 12, 2026, when SB 3222 took effect, an Illinois resident 21 or older may possess up to 60 grams of flower, 1,000 mg of THC in infused products and 10 grams of concentrate, under Section 10-10(a) and the IDFPR fact sheet. Those purchase-and-possession rules do not authorize home cultivation. Section 10-10(a)(4) separately permits registered patients to possess their lawful homegrown harvest, with excess over 60 grams of raw cannabis or its equivalent secured at the residence or residential property where it was grown.

Renters and landlords

Even a registered patient may be barred from growing at home. Section 10-5 lets the owner or lessor of residential property prohibit a tenant from growing cannabis, so check your lease before you plant anything.

State permission is separate from federal authorization

State permission does not change federal law. The federal Controlled Substances Act still makes it a crime to manufacture a controlled substance without federal authorization (21 U.S.C. § 841(a)(1)), and the federal penalty provisions count marijuana plants. An Illinois medical registration is not, by itself, federal authorization to cultivate. Follow where rescheduling stands on our marijuana rescheduling tracker.

What does the proposed 12-plant change mean?

A proposal is not current permission to grow more plants. The official synopsis for House Bill 3498 describes changing the household-cap wording from 5 to 12 plants. The official status page still lists referral to the House Rules Committee on Feb. 18, 2025 as its last action. It is not enacted law and does not change the patient-only authorization or five-plant restrictions that apply today.

The 2026 cannabis omnibus, SB 3222 (Public Act 104-463), raised adult possession limits, but the current home-cultivation statute still contains the patient-only restrictions explained above. Commercial cultivation is a separate licensing question; see our reporting on the Illinois outdoor cultivation rule.

Quick answers

Can I grow cannabis in Illinois without a medical card? No. Growing five or fewer plants without authorization is a civil violation with a $100 to $200 fine, and more than five plants is a felony.

How many plants can a medical patient grow in Illinois? Five plants taller than five inches per household, however many patients live there.

Can my landlord stop me from growing? Yes. Illinois law lets a property owner or lessor prohibit cultivation by a tenant.

Where do patients get seeds? From a licensed dispensary. Seeds may not be given or sold to anyone else.

For a lawyer’s walk-through of the 2019 statute that created these rules, see Cannabis Industry Lawyer’s Illinois home grow guide. For dated updates on everything else in state cannabis law, follow our Illinois cannabis law guide.

Original sources

• 410 ILCS 705/10-5, Cannabis Regulation and Tax Act: personal use of cannabis; restrictions on cultivation (Source: P.A. 101-27; 101-593)
• 720 ILCS 550/8, Cannabis Control Act: production or possession of cannabis plants (amended by P.A. 104-131, eff. Sept. 1, 2026)
• State of Illinois, Cannabis FAQs
• Illinois Department of Public Health, Medical Cannabis Patient Program
• IDFPR, SB 3222 fact sheet (June 2026)
• Illinois General Assembly, Bill Status of HB 3498, 104th General Assembly
• 410 ILCS 705/10-10, possession limits and homegrown harvest
• 21 U.S.C. § 841

By Thomas Howard, cannabis attorney. Thomas holds Illinois cannabis retail interests. This article is general information, not legal advice.