Travelling, Driving and Growing Cannabis Legally in Canada

Three rules cover most travel, driving and growing questions as of 27 October 2026. Cannabis cannot be taken across the Canadian border in either direction without Health Canada authorization. A driver with 2 ng or more of THC per millilitre of blood within two hours of driving commits a Criminal Code offence. And the federal Cannabis Act allows four plants per residence, which provinces can reduce.

Can I travel with cannabis?

Inside Canada, you can. B.C. says up to 30 grams of non-medical cannabis may be carried in airports and on planes, and PEI’s factsheet says flying with cannabis within Canada is permitted. Provincial laws still apply at each end, so a legal age or consumption rule in one province may differ in the next. Check the destination in the province comparison.

Across a border, you cannot. The Government of Canada says it is illegal to take cannabis, including products containing cannabis, across the Canadian border, whatever the amount and even where cannabis is legal. That covers edibles, extracts, topicals and CBD. The Canada Border Services Agency adds:

• any quantity entering Canada must be declared, including CBD products made from cannabis or hemp
• since 29 March 2021 it may issue a monetary penalty for undeclared cannabis, with penalties of up to $2,000
• a medical document does not change this; only Health Canada can grant import or export permits or exemptions, for medical, scientific or industrial hemp purposes

Travelling abroad with any amount can lead to a criminal charge and denial of entry to other countries in future, and B.C. warns that a re-routed flight could put you in a country with severe penalties. Medical patients should read the medical cannabis page.

What are the driving limits?

The Department of Justice explains the Criminal Code thresholds, which apply within two hours of driving:

Blood level (THC per ml)	Offence type	Penalty
2 ng to under 5 ng	Summary offence	Maximum $1,000 fine
5 ng or more	More serious (hybrid) offence	First offence: $1,000 minimum fine; second: 30 days; third: 120 days; maximum 10 years
2.5 ng or more with 50 mg of alcohol per 100 ml of blood	Combined offence	Same schedule as the 5 ng offence

The limits were set by regulation that came into force on 26 June 2018. Police can demand an oral fluid sample if they reasonably suspect a drug in the body, and can use a Standard Field Sobriety Test or a Drug Recognition Expert evaluation. Health Canada gives no safe waiting time: impairment can last more than 24 hours after use. Provinces add rules, such as bans on consuming in a vehicle in B.C., Ontario, Saskatchewan, Newfoundland and Labrador and PEI.

How many plants can I grow at home?

Section 12 of the Cannabis Act bars cultivating more than four plants at one time in a dwelling-house and shares that four among adults living together. Provinces may lower the number. What we confirmed on official pages:

• Ontario, B.C., Saskatchewan, PEI: four plants per residence or household. PEI requires renters to get written permission and outdoor plants to be locked in an enclosure at least 1.52 metres high.
• Newfoundland and Labrador and the Northwest Territories: four, indoors only.
• Manitoba: four for persons 19 or over, under section 101.26.1 of its Act.
• Quebec: Health Canada’s 2023 review report describes home cultivation as prohibited; we could not open Quebec’s own pages to check.

Leases and condo bylaws can bar growing, as discussed on the work and rental housing page. Visitors can find a short version in cannabis rules for visitors.