Logo Hypnoseeds
Search itemsCart0

Autoflowers vs. Photoperiod Cannabis: Which is the Best Cultivation Style for You?

/ in /
Image: Autoflowering and Photoperiod Cannabis Plants Compared on a Balance Scale. Article: 'Autoflowers vs. Photoperiod Cannabis: Choosing the Right Cultivation Style.

In the realm of cannabis cultivation, a spirited debate has emerged, centering on the merits and drawbacks of autoflowers vs. photoperiod plants. At the heart of this discussion is the evolution of cannabis genetics, particularly the notable advancements in autoflowering varieties. Over the years, breeders have tirelessly worked to enhance the quality and resilience of autoflowering strains, narrowing the gap between them and their photoperiod counterparts.

Today, both autoflowering and photoperiod seeds are widely accessible to growers, each boasting its own set of distinctive advantages. As we delve deeper into this topic, we’ll explore the unique characteristics of these two types of cannabis plants, helping growers make an informed decision tailored to their specific needs and cultivation goals.

The Basics of Autoflowers vs. Photoperiod Plants

Diving into the world of cannabis genetics, it’s essential to understand the fundamental differences between autoflowering and photoperiod plants, as each has its own unique set of characteristics shaped by nature and selective breeding.

Autoflowering Plants

Autoflowering cannabis plants are a marvel of genetic adaptation. They predominantly carry traits from the Cannabis ruderalis species, a subspecies native to regions with extended daylight hours during certain seasons. Unlike other cannabis types, autoflowers are not bound by light cycles to initiate their flowering phase. Instead, their transition from vegetative growth to flowering is determined by age. This means they automatically start producing buds after a certain period, regardless of the light duration they receive. This intrinsic trait makes them particularly appealing to growers who seek simplicity and speed in their cultivation process.

Photoperiod Plants

On the other hand, photoperiod cannabis plants are more traditional in their growth patterns and are heavily influenced by their exposure to light. These plants rely on specific light cycles to transition between their vegetative and flowering stages. Typically, they require a balanced 12-hour light and 12-hour dark cycle to initiate flowering. This light sensitivity allows growers to control the vegetative phase’s duration, giving them the flexibility to influence the plant’s size and structure before allowing it to flower. However, this also means that photoperiod plants demand more attention to light schedules, making them a choice for growers who appreciate a hands-on approach and seek larger yields.

Pros and Cons of Autoflowering Plants

Autoflowering cannabis plants have surged in popularity among growers, especially those looking for a more straightforward cultivation experience. But like all things, they come with their set of advantages and disadvantages.


  1. Quick Harvest Time: One of the standout features of autoflowers is their rapid growth cycle. From seed to harvest, these plants can be ready in as little as 2-3 months. This quick turnaround is ideal for growers looking to have multiple harvests in a year or those living in regions with shorter growing seasons.
  2. No Light Cycle Change Required: Unlike their photoperiod counterparts, autoflowers don’t rely on changes in light cycles to transition to the flowering stage. This eliminates the need for growers to adjust light schedules, making the cultivation process simpler and more straightforward.
  3. Hardy and Resilient: Autoflowers carry genetics from the Cannabis ruderalis species, known for its resilience in challenging environments. This makes them more robust and forgiving, especially to factors like temperature fluctuations and minor neglect.
  4. Compact Size: Autoflowering plants tend to be smaller and more compact, making them perfect for indoor growers with limited space. Their size also makes them less conspicuous, which can be an advantage for discreet outdoor growing.


  1. Lower Yields: One trade-off for their rapid growth and compact size is that autoflowers generally produce smaller yields compared to photoperiod plants. While they’re efficient and quick, those looking for bumper crops might find them a bit lacking.
  2. Sensitive to High-Stress Training Methods: While autoflowers can handle low-stress training techniques, they’re more sensitive to high-stress methods like topping and fimming. Their shorter vegetative phase means they have less recovery time, so any significant stress can impact their overall growth and yield.

Pros and Cons of Photoperiod Plants

Photoperiod cannabis plants have been the traditional choice for many growers for years. Their growth cycle is influenced by light schedules, and they offer a different set of advantages and challenges compared to autoflowers.


  1. Larger Yields: One of the most compelling reasons growers opt for photoperiod strains is their potential for larger yields. Given the right conditions and care, these plants can produce bountiful harvests, making the wait and effort worthwhile.
  2. Versatility in Training Methods: Photoperiod plants have a more extended vegetative phase, allowing growers to employ a range of training techniques. From topping and FIMming to Low Stress Training and Super Cropping, these plants are more forgiving and adaptable to various methods aimed at maximizing yield and managing plant structure.
  3. Availability of Diverse Genetics: The cannabis world is rich in genetics, and many of the classic, renowned strains are photoperiod varieties. Growers have access to a vast array of flavors, potencies, and growth characteristics, allowing for a more tailored growing experience.


  1. Longer Time to Harvest: Patience is a virtue with photoperiod plants. They take longer to transition from the vegetative to the flowering stage, and their overall growth cycle can be more extended compared to autoflowers. This means growers will wait longer from seed to harvest.
  2. Some Strains May Be Challenging for Beginners: While their versatility is a boon, it can also be a bane for novice growers. Some photoperiod strains can be finicky, requiring precise conditions, nutrients, and care. This can be daunting for those new to the cultivation scene.
  3. Potential for Male or Female Plants: Unless one is using feminized seeds, there’s always the risk of male plants when growing photoperiods. Male plants don’t produce the coveted buds and can pollinate female plants, leading to seedy flowers. This necessitates regular plant sexing and the removal of males.
  4. Larger Size Concerns: Photoperiod plants, especially sativa-dominant strains, can grow tall and wide. While this is great for outdoor grows or spacious indoor setups, those with limited space might find it challenging to manage these larger plants. Proper training and choosing the right strain can mitigate this, but it’s a factor to consider.

Factors to Consider When Choosing Between Autoflowers and Photoperiod Strains

The decision between autoflowering and photoperiod cannabis plants hinges on various factors, each influencing the cultivation journey differently. Here’s a deeper dive into these considerations:

Time Commitment and Labor Involved

  • Autoflowers: These plants are often dubbed the “set it and forget it” variety. Their growth cycle is predetermined, requiring less daily attention and adjustments in light schedules.
  • Photoperiods: They demand a more hands-on approach, especially when transitioning between vegetative and flowering stages. Regular monitoring and adjustments, especially in light schedules, are crucial.

Desired Time to Harvest

  • Autoflowers: If a quick turnaround is the goal, autoflowers shine. Their seed-to-harvest time is shorter, often ready in a few months.
  • Photoperiods: These plants take their time, especially if you’re aiming for maximum yield and potency. The wait can be longer, but the results can be more rewarding.

Expected Yield Size

  • Autoflowers: Generally, they produce smaller yields due to their compact size and shorter life cycle.
  • Photoperiods: With the right care, training techniques, and conditions, these plants can produce bountiful harvests.

Available Growing Space

  • Autoflowers: Their compact nature makes them ideal for smaller grow spaces like closets or small tents.
  • Photoperiods: They can grow tall and wide, demanding more space. This can be a challenge for indoor growers with limited room.

Regional Climate Considerations

  • Autoflowers: Their short growth cycle makes them suitable for regions with shorter summers or unpredictable weather patterns.
  • Photoperiods: They thrive in areas with longer, consistent seasons, as they rely on natural light cycles to transition between growth stages.

Desired Potency Levels

  • Autoflowers: While they’ve come a long way in terms of potency, they might not always match the THC levels of some high-potency photoperiod strains.
  • Photoperiods: Many classic, potent strains fall under this category, offering a wide range of THC and CBD levels.

Preference for Cloning vs. Seeds

  • Autoflowers: They don’t lend themselves to cloning, meaning you’ll start from seeds every time.
  • Photoperiods: They allow for cloning, enabling growers to replicate and preserve their favorite strains without starting from seed.

Grower’s Expertise Level

  • Autoflowers: Beginners often find success with autoflowers due to their forgiving nature and predetermined growth cycle.
  • Photoperiods: While they can be more challenging, they offer a richer learning experience. With a myriad of training techniques and growth strategies available, they’re suitable for both novices eager to learn and seasoned growers looking for a challenge.

Summary of Autoflowers vs. Photoperiod Plants

Growth Cycle2-3 months3-4 months
Light Cycle RequirementNone12/12 hours
Yield SizeTypically smallerGenerally larger
Training MethodsLimited (LST)Versatile
Climate SuitabilityFlexibleDepends on strain
Potency PotentialModerate/HighHigh (up to 28%+ THC)
PropagationSeeds onlySeeds and cloning
Ease for BeginnersEasierVaries by strain
Summary chart of Autoflowers vs. Photoperiod Strains

Final Words

Choosing between autoflowering and photoperiod cannabis plants hinges on a grower’s specific needs and goals. Autoflowers offer quick, hassle-free harvests and are great for limited spaces, while photoperiod plants provide larger yields and diverse genetics, catering to those seeking a deeper cultivation experience. Ultimately, the decision is personal. By understanding the unique benefits of each, growers can make an informed choice that aligns with their cultivation aspirations.

Weed Seeds Grown by our Customers

Discover strains you'll love, just like our community has!

Are you 21 or older?

You must verify that you are 21 years or older to enter this website. By proceeding, you are also agreeing to our terms and conditions, as well as consenting to the use of cookies on this site.

Clear Cart

No products in the cart.

U.S. Shipping: 2-5 Days 
20% OFF

Give us your email and snag 20% off!

please subscribe
If you're tempted to use a fake one, just send over your friend's who smokes a lot. We all win! 🌿💨
    GET IT
    I agree with the terms and conditions