Harvesting Cannabis

How to Get More Than One Cannabis Harvest in Northern Climates Growing Outdoors


Growing cannabis in northern climates can be challenging, but with the right strategies, you can achieve more than one harvest per season. This guide will walk you through the steps and techniques to maximize your yields in colder regions.

A horizontal image depicting an outdoor cannabis garden in a northern climate. The scene shows young cannabis plants in various growth stages

Understanding the Growing Season

In northern climates, the growing season is shorter due to cooler temperatures and earlier frosts. However, by carefully planning and employing specific techniques, you can extend the growing season and obtain multiple harvests.

Choosing the Right Strains

 image created to help highlight the importance of selecting the right cannabis strains, focusing on short flowering periods and hardiness/resilience.

Selecting the right cannabis strains is crucial for success. Look for strains that:

  • Have short flowering periods: Strains that flower quickly will be ready for harvest before the first frost.
  • Are hardy and resilient: Choose strains known for their ability to withstand cooler temperatures and potential stress.

Recommended Strains

  • Northern Lights: Known for its resilience and quick flowering time.
  • Autoflowering Strains: These strains automatically switch from the vegetative stage to the flowering stage, reducing the overall growth cycle time.

Planning Your Planting Schedule

 image designed to illustrate "Planning Your Planting Schedule" with a step-by-step guide for achieving multiple cannabis harvests.

To achieve multiple harvests, you need to carefully plan your planting schedule. Here’s a step-by-step guide:

Early Spring Planting

image illustrating "Early Spring Planting" with step-by-step instructions for starting cannabis seeds indoors and transplanting them outdoors

Mid-Season Planting

image illustrating "Mid-Season Planting" with step-by-step instructions for starting a second batch of cannabis seeds and transplanting them.

Late Season Harvest

image illustrating "Late Season Harvest" with step-by-step instructions for early harvesting and extending the growing season.
  • Early Harvest: Harvest the first batch when they’re ready. Depending on the strain, this could be as early as late summer.
  • Extend the Season: Use techniques like row covers, greenhouses, or cold frames to protect your second batch from early frosts, extending the growing season into the fall.

Techniques for Extending the Growing Season

 image illustrating "Techniques for Extending the Growing Season" with a focus on greenhouses and cold frames

Greenhouses and Cold Frames

  • Greenhouses: Provide a controlled environment, protecting plants from frost and extending the growing season.
  • Cold Frames: These are simpler structures that use the sun’s energy to warm the soil and air around your plants, offering frost protection.

Row Covers

 image illustrating "Row Covers" with a focus on their benefits for frost protection and pest control in cannabis growing

Growing Autoflowering Cannabis Plants for Multiple Harvests

image illustrating "Growing Autoflowering Cannabis Plants for Multiple Harvests," focusing on maximizing yields with autoflowering cannabis plants.

Autoflowering cannabis plants are ideal for northern climates due to their unique growth cycle and hardiness. Here’s how you can maximize your yields with autoflowers.

What Are Autoflowering Strains?

image explaining "What Are Autoflowering Strains?" and highlighting their advantages

Autoflowering cannabis plants automatically switch from the vegetative stage to the flowering stage after a specific period, regardless of the light cycle. This makes them perfect for regions with short growing seasons.

Advantages of Autoflowering Strains

  • Short Growth Cycle: Typically, autoflowering plants can go from seed to harvest in 8-12 weeks.
  • Hardiness: They are more resilient to environmental stress, making them ideal for unpredictable northern climates.
  • Discreet Size: Autoflowers tend to be smaller, making them easier to manage and less conspicuous.

Planting Schedule for Autoflowering Strains

Early Spring Planting

  • Start Indoors: Begin your seeds indoors 2-3 weeks before the last frost. Since autoflowers grow quickly, they don’t need as much indoor time as photoperiod strains.
  • Transplant Outdoors: Move your seedlings outdoors once the danger of frost has passed.

Mid-Season Planting

  • Second Batch: Plant a second batch of seeds directly outdoors 4-6 weeks after the first batch. Autoflowers can handle being planted directly in the ground or in pots outdoors.

Late Season Harvest

  • Third Batch: Depending on your climate, you may have time for a third batch. Plant these seeds directly outdoors in midsummer. Use row covers or cold frames to protect these plants as the temperatures drop.

Maximizing Autoflower Yield

image illustrating "Maximizing Autoflower Yield" with pruning and training techniques

Pruning and Training

Nutrient Management

 image illustrating "Nutrient Management" with a focus on a tailored feeding schedule for autoflowering cannabis plants

Techniques for Extending the Autoflower Growing Season

Using Greenhouses and Cold Frames

image illustrating "Techniques for Extending the Autoflower Growing Season" with a focus on using greenhouses and cold frames for early and late protection
  • Early and Late Protection: Greenhouses and cold frames can help you start your autoflowering plants earlier in the spring and keep them growing later into the fall, effectively extending the growing season.

Row Covers

  • Frost Protection: As with photoperiod strains, row covers can protect your autoflowers from early and late-season frosts, ensuring they have the best chance to mature fully.

Pros and Cons of Autoflowering Strains


image illustrating the "Pros and Cons of Autoflowering Strains" with a focus on the advantages
  • Fast Harvests: Multiple harvests in a single season due to the short growth cycle.
  • Hardy Plants: Better resilience to environmental stress and pests.
  • Compact Size: Easier to manage and suitable for discreet growing.


 image illustrating the "Pros and Cons of Autoflowering Strains" with a focus on the disadvantages
  • Yield Per Plant: Generally smaller yields per plant compared to photoperiod strains.
  • Nutrient Sensitivity: Autoflowers can be more sensitive to nutrient levels, requiring careful management.


image summarizing the key points for achieving multiple cannabis harvests in northern climates, with detailed information and visuals

Achieving more than one cannabis harvest in northern climates is possible with careful planning and the right techniques. By selecting suitable strains, planning your planting schedule, and employing methods to extend the growing season, you can maximize your yields and enjoy multiple harvests. Autoflowering strains, in particular, offer unique advantages for growers in northern climates. Their fast growth cycle, hardiness, and ability to flower independently of light make them an excellent choice for achieving multiple harvests. Remember, growing cannabis successfully in northern climates requires attention to detail and a willingness to adapt to changing conditions.

For more detailed information on cannabis strains suitable for northern climates and to purchase high-quality seeds, visit Green Avenger Seeds.

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