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Cannabis 101 / 04

Reading a label

Before a cannabis product can be sold in Michigan, the package must be sealed and labelled with a specific list of information. Here is what each part means, in the order the rule lists it.

Updated November 9, 2026

01

Who made and packed it

The name and state license number of the grower or processor, its trade name, and the package tag from the statewide tracking system (Metrc). If another licensee packaged it, their name and license number appear too.

02

Harvest date and strain

The date of harvest and the name of the strain, where they apply. A strain name tells you which cultivar the grower says it is; two growers' plants with the same name aren't always genetically identical.

03

Net weight

The weight of the product in US customary or metric units.

04

THC and CBD

The concentration of THC and CBD as reported by the lab after testing, with a statement that the actual value may vary from the reported value by 10%.

05

Activation time

How long the product typically takes to become active, shown in words or as a pictogram. Follow this guidance for the product you bought.

06

Testing lab

The name of the lab that performed passing compliance testing on the product in its final form, and the test date.

07

Universal symbol

The state's universal symbol for marijuana products, published by the Cannabis Regulatory Agency, must appear on the package.

Source: CRA — Updated Universal Symbol ↗

08

Required warnings

  • "It is illegal to drive a motor vehicle while under the influence of marihuana."
  • "National Poison Control Center 1-800-222-1222."
  • "For use by individuals 21 years of age or older or registered qualifying patients only. Keep out of reach of children."
  • A boxed state warning in capital letters — read it in full on the package.

Source: Michigan CRA administrative rule R 420.504(1). "Marihuana" is the spelling Michigan law uses.

Source: CRA rules: Marihuana Sale or Transfer (R 420.501–420.511) · R 420.504 ↗

Keep reading

CannabinoidsProduct typesMichigan cannabis basicsExplore the strain library

For adults 21+. Education only — not medical advice. Experiences vary from person to person.

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