Growing Cannabis in Alberta

Cannabis, also known as marijuana, has a long history of cultivation and use around the world. With the legalization of recreational cannabis in Canada in 2018, many provinces, including Alberta, have witnessed a surge in cannabis cultivation and consumption. This article provides an overview of the cultivation of cannabis in Alberta, detailing its climate, legalities, and cultivation best practices.

Alberta’s Climate and Its Impact on Cannabis Cultivation

Alberta, located in western Canada, experiences a continental climate characterized by cold winters and warm summers. This can present unique challenges and advantages to cannabis growers.


Cannabis typically requires a consistent temperature range between 20°C to 30°C during its growing period. While Alberta’s summers can provide these ideal conditions, its winters, which can be extremely cold, can pose a threat to outdoor cultivation. As such, many growers opt for indoor cultivation or greenhouses to regulate temperature more effectively.


Alberta has long daylight hours during the summer and short days in winter, which affects the cannabis plant’s vegetative and flowering stages. Growers need to be aware of the natural photoperiod to ensure their plants receive adequate light during the vegetative stage and can be induced to flower at the desired time.

Precipitation and Humidity

Alberta is generally dry, but the region does experience sporadic heavy rainfall. Too much moisture can lead to mold and mildew on cannabis plants. To counteract this, growers should ensure proper drainage for outdoor grows and adequate ventilation for indoor setups.

Legalities of Cannabis Cultivation in Alberta

After the Cannabis Act came into effect in 2018, Canadians have been allowed to grow a limited number of cannabis plants for personal use. However, specific regulations vary by province.

Personal Cultivation

In Alberta, individuals aged 18 and over can legally cultivate up to four cannabis plants per household for personal use. These plants must not be visible from a public place. It’s important to note that the four-plant limit is per household, not per individual.

Commercial Cultivation

For commercial cultivation, producers must obtain a license from Health Canada and meet stringent regulatory requirements, including security measures, quality control, and record-keeping. In Alberta, the Alberta Gaming, Liquor, and Cannabis (AGLC) is responsible for oversight of the provincial retail cannabis market, ensuring legal compliance of businesses within the province.

Best Practices for Growing Cannabis in Alberta

To ensure a successful harvest in Alberta’s unique climate, growers should follow certain best practices.

Choose the Right Strain

Some cannabis strains are better suited for colder, drier climates than others. When selecting a strain, growers should consider its resilience to Alberta’s specific environmental challenges.

Indoor Cultivation vs. Outdoor Cultivation

Given the temperature fluctuations and potential for early frosts, many growers in Alberta prefer indoor cultivation. Indoor grows allow for complete control over the growing environment, from temperature to humidity to light. However, outdoor cultivation can be successful in Alberta during the warmer months, particularly if growers use greenhouses to extend the growing season.

Monitoring and Pest Control

Regularly monitoring plants for signs of disease, mold, or pest infestations is crucial. Alberta’s dry climate can attract spider mites, a common pest for cannabis. Regularly inspect plants, use organic pest control methods, and maintain a clean growing environment to keep plants healthy.

Proper Harvesting and Curing

To maximize the potency and flavor of the cannabis, growers should harvest at the right time, typically when 50-70% of the trichomes have turned milky or amber. After harvesting, buds should be dried slowly in a controlled environment with low humidity to prevent mold growth. Once dried, cannabis should be cured in jars to enhance its flavor and aroma.


Alberta, with its unique climate, presents both challenges and opportunities for cannabis cultivation. By understanding the local climate, adhering to provincial regulations, and following best practices, growers can produce high-quality cannabis in Alberta, whether for personal or commercial purposes. As the industry continues to evolve, Alberta has the potential to become a significant hub for cannabis cultivation in Canada.