Auto Flower Vs Photoperiod

Auto-flowering cannabis is always said to be the easier seed to grow when it comes to growing. Auto plants are often considered easier to grow than photoperiod plants for several reasons:

  1. Light Schedule: Auto-flowering plants don't rely on light cycles to begin flowering. They automatically switch from the vegetative to the flowering stage based on age, usually around 2-4 weeks. You don't have to adjust the light schedule to induce flowering.
  2. Growth Time: Auto-flowering strains typically have a shorter life cycle, often completing their growth from seed to harvest in about 8-12 weeks. This faster turnaround can be advantageous for growers looking for quicker harvests.
  3. Size: Auto-flowering plants are generally smaller and more compact than photoperiod plants, making them ideal for indoor growing and growers with limited space.
  4. Resilience: Auto-flowering strains are often more resilient and hardy, having been bred from Cannabis ruderalis, which is known for its robustness and ability to grow in harsher climates.
  5. Less Maintenance: With a fixed life cycle and no need to manage light schedules, auto-flowering plants require less hands-on management. This makes them a good choice for beginners or those looking for low-maintenance growth.

However, there are some trade-offs:

  1. Yield: Auto-flowering plants typically produce lower yields compared to photoperiod plants. This is due to their smaller size and shorter growing period.
  2. Control: Since auto-flowering plants switch to flowering automatically, you have less control over the vegetative period. This can limit your ability to train the plants or increase their size before they flower.
  3. Potency and Variety: While there have been significant improvements in auto-flowering genetics, some growers believe that photoperiod plants offer a wider variety of strains and potentially higher potency.


Auto-flowering cannabis plants are a type of cannabis that automatically transitions from the vegetative stage to the flowering stage without the need for a change in the light cycle. This characteristic distinguishes them from photoperiod cannabis plants, which require specific light cycles (typically 12 hours of light and 12 hours of darkness) to initiate flowering.

Here are some key points about auto-flowering cannabis:


  1. Genetics: Auto-flowering plants are derived from Cannabis ruderalis, a subspecies of cannabis known for its ability to flower based on age rather than light exposure. Breeders have crossed ruderalis with indica and sativa strains to produce auto-flowering hybrids that retain the desirable traits of their parent strains while incorporating the auto-flowering characteristic.
  2. Growth Cycle: Auto-flowering plants typically complete their life cycle in a shorter period than photoperiod plants, often in 8-12 weeks from seed to harvest. This rapid growth cycle allows for multiple harvests in a single growing season.
  3. Light Requirements: Auto-flowering plants do not rely on changes in light exposure to begin flowering. They can be grown under continuous light (up to 24 hours a day) or a consistent light schedule such as 18 hours of light and 6 hours of darkness throughout their life cycle.


Photoperiod cannabis plants are types of cannabis that rely on changes in the light cycle to transition from the vegetative stage to the flowering stage. This dependency on light exposure is a key characteristic that distinguishes them from auto-flowering cannabis plants.

Here are some key points about photoperiod cannabis plants:


Light Cycle Dependency: Photoperiod plants require specific light cycles to initiate flowering. Typically, they need about 12 hours of uninterrupted darkness and 12 hours of light to trigger the flowering stage. This mimics the natural light conditions of late summer and fall, which signal the plant to start producing flowers.


Growth Stages:

    • Vegetative Stage: During this stage, photoperiod plants require long periods of light (usually 18-24 hours of light per day) to grow and develop foliage. This stage can be extended as long as the grower desires by maintaining the long light periods.
    • Flowering Stage: When the light cycle is switched to 12 hours of light and 12 hours of darkness, the plants begin to flower. This stage typically lasts 8-12 weeks, depending on the strain.


Control: Growers have more control over the growth process with photoperiod plants. By manipulating the light cycle, they can control the timing and duration of the vegetative and flowering stages. This allows for techniques such astopping, training, and extending the vegetative period to increase plant size and yield.


Overall, if you are looking for a simpler, quicker growing experience with less need for intervention and space, auto-flowering plants are a great choice. If you prefer more control over the growth process and are aiming for larger yields, photoperiod plants might be more suitable.


For any more questions on this topic, feel free to reach out to High@dankseeds.com

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