Autoflower seeds are popular among modern cannabis growers looking for fast turnaround times and no–nonsense cultivation. With new variants entering the market each day, finding the best autoflowering seeds can be challenging.
Wondering how to distinguish between low-quality and high-quality auto seeds? Join us to discover the top 15 autoflower seeds across three categories: beginner, outdoor, and indoor seeds.
Let’s get started!
What do the best autoflowering seeds have in common?
Before we dive into the sought-after traits of the best autoflowering marijuana seeds, let’s look at what autoflower seeds are.
All cannabis plants fall into one of two groups: photoperiod and non-photoperiod. Here’s a brief overview of the autoflower vs. photoperiod distinctions:
- Photoperiod marijuana crops start flowering when they receive 12 hours of light and 12 hours of darkness. These plants vegetate indefinitely with 18–24 hours of light a day.
- Non-photoperiod cannabis crops have a limited vegetative phase and begin flowering automatically after a certain period—regardless of their light schedule.
Autoflower cannabis plants are non-photoperiod and don’t rely on a light schedule to begin flowering. They can bloom with 12, 18, or 24 hours of light, but more is better.
Now, what sets the best autoflowering seeds apart from the rest?
Fast turnaround time
These plants automatically start flowering around 3–4 weeks after germination and have an average seed-to-harvest time of 7–12 weeks. In general, it takes three months for autoflower plants to reach full maturity.
Each non-photoperiod strain has a slightly different life cycle. The best autoflowering seeds with the fastest-growing times are ready for harvest in as little as ten weeks. Due to their shorter life span, autos allow outdoor growers to collect more than one harvest per season.
Autoflower seeds contain ruderalis genetics, which gives them more resilience against colder climates and harsh environments. They’re also slightly more immune to diseases and pests.
Although ruderalis traits make it easier to grow autos in tough conditions, these fast-growing plants can’t handle much stress.
It’s vital to watch out for common cultivation errors, as autos typically don’t have enough time to recover. Some of these mistakes include over/underwatering, incorrect growing pots, insufficient nutrients, and unfavorable environments.
The best autoflowering seeds are also feminized. These genetics ensure that all plants grow into females capable of producing buds. Not all non-photoperiod strains contain feminized genetics, but the best ones do.
Autoflower plants rarely stretch to more than four feet, which is beneficial for indoor and outdoor growers. These crops fit into vertically–restricted growing spaces and are suitable for discreet cultivation. Autos are an excellent choice for cupboards, balconies, and garden beds.
5 best autoflowering seeds for beginners
You can confidently grow autoflower seeds if you’re a beginner—but make sure you don’t hurt them. These non-photoperiod plants have a short life span and not enough time to recover from stressful events. It’s essential to keep your crops happy and healthy.
Here are the five best autoflowering seeds for beginners:
Northern Lights Autoflower
Northern Lights autoflower seeds are feminized, easy to grow, and suitable for indoor and outdoor cultivation. They don’t have any complicated needs and boast a moderate resistance to mold, fungi, and pests. These plants adore warm, sunny weather and prefer a soil-based medium with plenty of nutrients for autoflowers.
This cultivar has an average height of 3–4 feet. Northern Lights autoflower crops have a flowering time of 8–9 weeks and a total life span of about 13 weeks. Expect to collect 12–16 oz./m² indoors and 4 oz. per outdoor plant.
This indica-heavy hybrid boasts up to 16% THC and delivers a gentle euphoric buzz coupled with a limb-locking body stone. Its desirable growing traits give Northern Lights a place among the best autoflowering seeds for beginners.
Afghan autoflower seeds are one of the top choices for new growers. They’re feminized, hardy, and thrive in any setup. This cultivar is mostly resilient to pathogens and pests—outdoor crops can be susceptible to mold. The dense buds require some periodic attention.
This short yet sturdy strain typically stretches to 3–5 feet. Afghan auto plants flower for 8–9 weeks and have a total life cycle of about 11 weeks. The average indoor yield is 14 oz./m² and 2–4 oz. per outdoor crop.
This mostly indica hybrid contains 15–17% THC and 0.2% CBD. Afghan autoflower buds offer deep physical relaxation that often ends up in couch–lock. These powerful effects and fast-growing times give this cultivar a spot among the best autoflowering seeds for beginners.
Gorilla Glue #4 Autoflower
Gorilla Glue #4 autoflower seeds are feminized, pest-resistant, and robust. This novice-friendly cultivar does its finest work in controlled environments with sufficient nutrients. It also produces fruitful results in a warm, sunny, and Mediterranean climate.
This sticky strain rarely reaches more than three feet tall. Gorilla Glue #4 auto has a flowering time of 8–9 weeks and a total life span of around 12 weeks. Growers typically harvest 15–19 oz./m² indoors and 2–4 oz. per outdoor plant.
This indica-leaning hybrid boasts 19–24% THC and 0.7% CBD. Gorilla Glue #4 is famous for its strong effects that bring euphoria, upliftment, and a heavy body buzz. You can’t go wrong with this cultivar if you search for the best autoflowering seeds for beginners.
Sour Diesel Autoflower
Sour Diesel autoflower seeds are feminized, versatile, and resilient to most diseases, molds, and pests. They flourish outdoors and inside, producing excellent buds with very little effort. Give them plenty of light, nutrients, and water for optimal results.
This short yet bushy cultivar has an average height of 2.5–3.5 feet. Sour Diesel auto crops flower for 8–9 weeks and go from seed to harvest in about 12 weeks. Expect to collect 12–14 oz./m² indoors and 2–6 oz. per outdoor plant.
This sativa-dominant hybrid boasts 16–23% THC and 0.7% CBD. It delivers energy, focus, creativity, relaxation, and upliftment. Sour Diesel’s mind-blowing effects and sought-after growing traits make these some of the best autoflowering seeds for beginners.
Zkittlez autoflower seeds are suitable for novice cultivators and don’t come with any challenges. These plants are feminized and easily adapt to indoor and outdoor setups. Their bushy foliage may require regular maintenance and sufficient airflow.
This short strain grows to a maximum of three feet. Zkittlez auto plants have a flowering time of 7–8 weeks and a total life span of about 10–11 weeks. The average indoor yield is 15–19 oz./m² and 2–4 oz. per outdoor crop.
This indica-leaning hybrid contains 17–21% THC and 0.3% CBD. Its effects include euphoria, happiness, calmness, relaxation, and upliftment. Zkittlez is undoubtedly among the best autoflowering seeds for beginners.
5 best autoflowering seeds for indoor cultivation
Growing cannabis indoors offers numerous benefits, including more control over the different elements in your setup. Cultivating autoflower seeds in a sheltered space also protects them from stressful situations.
Here are the five best autoflowering seeds for indoor growers:
Blueberry autoflower seeds are low–maintenance, feminized, and resilient. They seamlessly fit into small indoor grow rooms and thrive in controlled environments. To give yourself more plants in a limited area, implement the Sea of Green (SOG) technique.
For the best climate conditions, stick to 70–80℉ with 40–50% humidity.
These compact plants never grow taller than 2.5 feet. Blueberry auto remains in the flowering stage for 8–9 weeks and goes from seed to harvest in 10–11 weeks. Expect an average yield of 15 oz./m².
This indica-leaning hybrid contains 19–21% THC and 0.5% CBD. Blueberry auto delivers plenty of physical relaxation and a moderate cerebral buzz. Thanks to their straightforward needs and generous yield, these are some of the best autoflowering seeds for indoor breeders.
Girl Scout Cookies Autoflower
Girl Scout Cookies autoflower seeds are beginner–friendly, feminized, and a dream to grow indoors. They also thrive with the SOG technique, which creates an even canopy of crops. Aim for at least 18 hours of light a day, a temperature of 69–80℉, and humidity at around 50%.
This cultivar stretches to an average of three feet and displays bushy growth. Girl Scout Cookies auto has a flowering time of 8–9 weeks and reaches full maturity in about 12 weeks. Expect to harvest around 17–21 oz./m² under optimal conditions.
This well-balanced hybrid boasts 18–22% THC and 0.6% CBD. It offers the best of both worlds: a thrilling mental high and a full–body buzz. With their easy-to-grow needs, powerful effects, and high yields, these are some of the best autoflowering seeds for indoor cultivators.
White Widow Autoflower
White Widow autoflower seeds are hardy, beginner–friendly, and suitable for indoor cultivation. These plants prefer an organic soil substrate with a grow room temperature of around 70–80℉. Once again, opt for the SOG method to increase yields and maximize space.
This strain reaches 1.5–3.5 feet and easily fits into tight spaces. White Widow auto remains in the flowering stage for 8–9 weeks and has a total life span of about 12 weeks. Most growers produce 10–15 oz./m² under favorable conditions.
This indica-dominant hybrid has 16–20% THC and 0.8% CBD. It delivers a blend of mental and physical sensations, leaving you clear-headed, focused, calm, and uplifted. These desirable characteristics result in some of the best autoflowering seeds for indoor breeders.
Super Skunk Autoflower
Super Skunk autoflower seeds are straightforward to raise, fast growing, and adaptable. These crops need at least 18 hours of light daily to produce the juiciest buds possible.
These plants stretch to a maximum of 3.5 feet and have a compact appearance. Super Skunk auto flowers for 7–8 weeks and has a total life cycle of about 10 weeks. The average bounty is 6 oz./m² under prime conditions.
This indica-leaning hybrid contains 14–19% THC and 0.3% CBD. Its effects include euphoria, relaxation, calmness, and sedation. Pair these incredible sensations with a hassle-free growing process, and you’ve got some of the best autoflowering seeds for indoor cultivators.
Bruce Banner Autoflower
Bruce Banner autoflower seeds are a joy to grow and offer exceptionally high yields for a non–photoperiod variant. These plants do well with 400-watt lamps and as much light exposure as possible. Regular trims may be necessary to keep the dense foliage in check.
This cultivar typically stretches to about four feet. Bruce Banner auto has a flowering time of 8–9 weeks and reaches full maturity in about 11–12 weeks. This high-yielder produces an average of 17–21 oz./m².
This sativa-heavy hybrid boasts 21–26% THC and 0.7% CBD. It delivers powerful mental sensations that leave you energized, creative, uplifted, stress–free, and focused. Bruce Banner encompasses all the traits of the best autoflowering seeds for indoor growers.
5 best autoflowering seeds for outdoor cultivation
The addition of ruderalis genetics gives autoflower seeds more resilience against slightly harsher growing environments. Some strains are hardier than others, making them an excellent choice for al fresco cultivation.
Here are the five best autoflowering seeds for outdoor growers:
Gelato autoflower seeds are feminized, relatively low–maintenance, and fast growing. These crops adore warm weather with ample sunlight. They require frequent trims to prevent mold, inadequate airflow, and disease.
This strain has an average height of 2–3 feet and is suitable for discreet growing. Gelato auto remains in the flowering stage for 8–9 weeks and has a total life span of about 13 weeks. Expect each plant to churn out about 2–4 ounces.
This well-balanced hybrid has 19–21% THC and 0.6% CBD. Its cocktail of effects makes you feel creative, euphoric, relaxed, uplifted, and probably hungry. Grow potent buds with some of the best autoflowering seeds for outdoor cultivators.
Lowryder autoflower seeds are hardy, feminized, and perfect for discreet breeders. These resilient crops can withstand semi-severe weather—except for frost. They don’t require much maintenance and prefer a slightly acidic environment.
These plants never reach more than a foot tall and are ideal for low-profile growing. Lowryder auto crops have a flowering time of 7–8 weeks and go from seed to harvest in about 10 weeks. This stealthy strain produces 1–3 oz. of buds per plant.
This balanced hybrid contains 12–14% THC and 0.2% CBD. It’s a favorite among low-tolerance tokers who don’t want any overwhelming sensations. It offers a gentle dose of euphoria, energy, focus, and relaxation.
Lowryder was the first commercial autoflower to enter the marijuana market in the early 2000s. As a result, these are undoubtedly some of the best autoflowering seeds for outdoor breeders.
OG Kush Autoflower
OG Kush autoflower seeds are feminized, flexible, and suitable for beginner growers. They require moderately warm weather and a semi-humid climate. Raising them in colder environments is possible, but your yield size could suffer.
These plants can reach anywhere from three to six feet tall, depending on the external conditions. OG Kush auto remains in the flowering phase for 8–9 weeks and reaches full maturity in around 12 weeks. Expect to collect 2.5–5 oz. of buds per plant.
This mostly indica hybrid boasts 17–21% THC and 0.7% CBD. It offers total physical comfort and a dash of cerebral stimulation. These are some of the best autoflowering seeds for outdoor cultivators wanting premium results without breaking their backs.
Lemon Haze autoflower
This classic strain is the budchild of a ruderalis, White Widow, Original Haze, and Lemon OG Kush. It contains THC levels of up to 25% and 0.8% CBD.
Lemon Haze auto seeds deliver easy crops to grow and maintain when cultivating outdoors. The sativa-dominant hybrid is an attractive prospect for new growers.
Plants grown from these seeds are compact and take about nine weeks from seed to harvest. They deliver yields of 12–14 oz./m² indoors and 18 oz./plant outdoors.
Lemon Haze auto nugs produce uplifting and energetic effects. The smoke releases spicy lemon and citrus flavors after lighting up. You feel relaxed and focused after indulging.
Mazar autoflower seeds are robust, feminized, and easy to cultivate. Despite their preference for warm, sunny regions, these plants can withstand colder climates. They boast an immunity against pathogens and pests and don’t require much trimming.
These small crops only reach 2–3 feet and allow full discretion. Mazar auto has a flowering time of 8–9 weeks and reaches full maturity within 12 weeks. Most growers collect 2–7 oz. of buds per plant.
This indica-leaning hybrid contains 9–10% THC and 0.3% CBD. It offers subtle mental stimulation and gentle physical relaxation. Due to their hardy traits and simple needs, these are some of the best autoflowering seeds for outdoor growers.
The lowdown on autoflower seeds
From regular and feminized variants to fast version and autoflower seeds, the current marijuana market gives cannabis growers limitless choices.
Narrow your options and pick autoflower seeds to grow plants with fast turnaround times, manageable sizes, resilient qualities, and feminized genetics. The best autoflowering seeds of 2023 won’t let you down.
Ready to grow non-photoperiod cannabis plants that are harvest-ready in as little as ten weeks? Visit our Homegrown store and shop our wide selection of autoflower seeds.
About the author: Derek LaRose
Also known as Kronic from The Cannabis Kronicles, Derek LaRose is a young ambitious cultivator and a staple educator for indoor cultivation.