Growing Cannabis in Quebec

The Canadian province of Quebec, known for its vibrant cultural scene and picturesque landscapes, has also become a region of interest in the realm of cannabis cultivation. Since the Cannabis Act (Bill C-45) came into effect in 2018, which legalized recreational cannabis across Canada, the specifics of cannabis cultivation, sale, and consumption in each province and territory have been left to local jurisdiction. This article offers an overview of the legal framework, climatic considerations, and best practices related to growing cannabis in Quebec.

Legal Framework for Cultivation

Licensing and Regulation

In Quebec, the legal age for cannabis possession and cultivation is 21, making it the province with the highest legal age for cannabis in Canada. The Société québécoise du cannabis (SQDC) is the only authorized retailer for cannabis in the province. However, home cultivation for personal use is allowed, with a limit of four plants per household.

Individuals and companies looking to engage in commercial cultivation must undergo a rigorous licensing process. The federal government, through Health Canada, handles the commercial licensing, ensuring that strict guidelines are met, especially in terms of quality assurance, security measures, and record keeping.


While the Cannabis Act allows Canadian households to grow up to four plants, it is essential to note that in Quebec, only seeds purchased from the SQDC can be legally cultivated. Furthermore, the plants must be grown at the individual’s primary residence and not visible from public spaces.

Climatic Considerations for Outdoor Cultivation

Quebec is characterized by its cold winters and warm summers. These seasonal variations pose challenges and opportunities for outdoor cannabis cultivators.

Temperature and Light

Cannabis typically requires a consistent temperature range between 20°C to 30°C during its growth phase. Given Quebec’s short summer, growers need to select strains that can mature within this limited time frame. Autoflowering strains, which are not dependent on photoperiod changes to flower, might be the best fit for Quebec’s climate.

Precipitation and Humidity

The province’s humid summers can increase the risk of mold and mildew on cannabis plants. Proper spacing between plants, pruning, and ensuring good airflow can help reduce this risk. A well-draining soil is also essential to prevent root rot and other moisture-related diseases.

Indoor Cultivation Best Practices

For many Quebecois cultivators, indoor growing is a preferred method due to the province’s climatic challenges. Indoor cultivation allows for greater control over environmental factors and often results in a higher yield and quality.


LED or HPS (High-Pressure Sodium) lights are popular choices for indoor cultivation. These lights can mimic the sun’s natural spectrum, providing plants with the necessary light for photosynthesis. It’s vital to maintain an optimal light schedule: 18 hours of light and 6 hours of darkness during the vegetative stage, and 12 hours each of light and darkness during the flowering stage.

Airflow and Temperature Control

A well-ventilated growing space prevents excessive humidity, which can lead to mold growth. Additionally, maintaining a consistent temperature is crucial for the plant’s metabolic processes. An indoor temperature of around 22°C to 28°C is ideal for cannabis growth.

Soil and Nutrients

While several mediums can be used for indoor cultivation, a well-aerated potting mix with good drainage properties is most commonly recommended for cannabis. Plants also require a balanced diet of nitrogen, phosphorus, potassium, and other micronutrients. Regularly monitoring the pH levels of the soil can help in nutrient absorption.


Growing cannabis in Quebec, whether for personal or commercial purposes, requires an understanding of both the legal landscape and the province’s unique climatic challenges. By adhering to the guidelines set by regulatory bodies and adapting cultivation techniques to Quebec’s environment, growers can ensure a successful and fruitful harvest. As the province continues to adapt and evolve its cannabis regulations, there’s potential for Quebec to further establish itself as a significant player in the Canadian cannabis industry.