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When to Start Planting Cannabis Outdoors in the Southern Hemisphere

Updated: Aug 11, 2023

As the Southern Hemisphere transitions into the warmer months, cannabis enthusiasts are eagerly preparing to plant their beloved crops outdoors. Timing is crucial when it comes to cultivating cannabis, as the right start can ensure optimal growth and yields. In this article, we will guide you through the factors to consider and provide a comprehensive overview of when to begin planting cannabis outdoors in the Southern Hemisphere.

Understanding the Climate:

The Southern Hemisphere comprises various regions with diverse climates, so it's important to understand the specific conditions in your area. However, in general, the Southern Hemisphere experiences opposite seasons to the Northern Hemisphere. While the Northern Hemisphere gears up for winter, the Southern Hemisphere welcomes spring and summer. Therefore, the timing for cannabis cultivation differs significantly between the two hemispheres.

Choosing the Ideal Strains:

Before deciding when to start planting, it's crucial to consider the strains best suited for your local climate. Some cannabis strains thrive in cooler temperatures, while others prefer warmer climates. By selecting strains adapted to your region's climate, you increase your chances of a successful outdoor grow.

Factors to Consider:

Several factors influence the ideal timing for outdoor cannabis cultivation:

Photoperiod: Cannabis plants are highly responsive to changes in daylight hours. It's essential to take into account the natural photoperiod in your region, as this determines the length of the vegetative phase before flowering begins.

Frost Risk: Cannabis plants are susceptible to frost damage. Before planting, it's important to be aware of the last expected frost date in your area. Starting your outdoor grow after the risk of frost has passed is crucial for the plants' survival.

Rainfall and Humidity: Cannabis plants require appropriate moisture levels to thrive. Understanding the rainfall patterns and humidity levels in your region will help you plan watering schedules and prevent issues such as mold or root rot.

Recommended Timelines:

While specific dates may vary depending on your location, the following guidelines will help you determine the optimal time to start planting cannabis outdoors in the Southern Hemisphere:

Early Spring (September - October): As the temperatures begin to rise and the risk of frost diminishes, early spring is an ideal time to start germinating your cannabis seeds indoors. This allows you to transplant healthy seedlings once the weather becomes more favorable.

Late Spring (November - December): By late spring, the weather is generally warmer and more stable, making it suitable for transplanting your cannabis seedlings outdoors. Ensure the threat of frost has passed before making the move.

Early Summer (December - January): For those in regions with particularly warm climates, early summer can be an optimal time to start planting directly into the ground. The longer days and abundant sunshine during this period promote vigorous growth.


Timing is crucial when it comes to planting cannabis outdoors in the Southern Hemisphere. By considering factors such as photoperiod, frost risk, and local climate conditions, you can determine the ideal time to start your outdoor grow. Remember to select strains adapted to your region and keep an eye on the weather patterns. With careful planning and attention to detail, you can enjoy a successful and bountiful cannabis harvest in the Southern Hemisphere.

Disclaimer: Please note that the cultivation, sale, and use of cannabis may be subject to legal restrictions in your country or region. It is essential to familiarize yourself with the local laws and regulations before engaging in any cannabis-related activities. This article is provided for informational purposes only and should not be considered legal advice.


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