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Know the law in Ontario

Effective Oct. 17, 2018, cannabis will be legal in Canada, but...

Adults in Ontario will need to be 19 and older to buy, use, possess and grow recreational cannabis.

Adults can have a maximum of 30 grams (about one ounce) of dried cannabis in public at any time.

Adults will only be able to use recreational cannabis in:

  • a private home
  • their unit or on your balcony, if they live in a multi-unit building like an apartment or condo. This depends on the building’s rules or lease agreement.

They will not be allowed to use recreational cannabis in:

  • any public place
  • workplaces
  • motorized vehicles

Adults will be able to grow up to four plants per private home.

It will not be legal to have any cannabis in their system when driving a motor vehicle.

Full information on Cannabis legislation in Ontario available on the Government of Ontario website under Cannabis Legalization.

AT HUMBER: Growing, baking, smoking, trafficking and/or distribution of cannabis is prohibited at Humber College and in student residences.

pot plant

Cannabis comes from the hemp plant Cannabis Sativa.

thc & cbd chemicals

The 2 main chemicals found in cannabis are Tetrahydrocannabinol (THC) and Cannabidiol (CBD).

silouette of a head with two arrows in it

THC is the chemical ingredient that gives the plant its mind altering effects.

Heart with a health plus sign

CBD is the chemical ingredient that does not produce psychoactive effects but potentially offers therapeutic benefits.


Did you know that using cannabis can have negative effects?

Cannabis use can:

  • Make it harder to learn and remember things. After using cannabis, you may have problems paying attention, remembering or learning things, and making decisions. Using cannabis can reduce your ability to perform well on the job or at school.
  • Affect mood and feelings. Cannabis use can cause anxiety or panic.
  • Affect mental health. Cannabis use can trigger a psychotic episode (not knowing what is real, experiencing paranoia, having disorganized thoughts, and in some cases having hallucinations).
  • Be addictive. Close to 1 in 10 adults who have ever used cannabis will develop an addiction to it. This statistic rises to about 1 in 6 for people who started using cannabis as a teenager.

Lower your risk:

  • To avoid health risks simply abstain from use.
  • Using occasionally has less risk to your health than regular use.
  • Cannabis can impair your driving skills. Impaired driving is against the law. Don’t use and drive.
  • Vaporizers or edibles reduce the risk to your lungs. When using edibles start with a small amount and wait (onset can take up to 2 hours)
  • Strains with high THC may cause more harm.

When to think about NOT using:

  • If you’re young. Using cannabis can change the way your brain grows and develops.
  • You have a family history of psychosis or other mental health problems.
  • During pregnancy

Full information available in Canada’s Lower-Risk Cannabis Use Guidelines from the Centre for Addiction and Mental Health:

Want to know more or need support?

Check out these resources:

Know the law in Ontario:

Your Cannabis Questions, Answered.

Cannabis in Canada. Go to the Government of Canada website to get the honest facts.

Humber College Support:

Humber Student Wellness and Accessibility Centre

Talk to a nurse, doctor or counsellor. To book an appointment, you may visit the Student Wellness & Accessibility Centre (North) or Student Welcome Centre (Lakeshore) in person or by telephone:

  • 416-675-5090 (North)
  • 416-675-6622 ext. 3331 (Lakeshore)

Provincial Help Resources:

ConnexOntario, Drug and Alcohol Helpline

Provides free, confidential and anonymous information services about drug and alcohol addiction services in Ontario, by phone, email or web chat, 24/7/365.

  • Toll-Free: 1-800-565-8603


Is a free, confidential and anonymous helpline (24/7/365) for post-secondary students (17-25) in Ontario that provides professional counselling and information and referrals on mental health, addictions and well-being.

  • Toll-Free: 1-866-925-5454