Best Autoflowering Seeds For Beginners

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by Morgan

Last update:

September 8, 2023

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What Are Autoflowering Seeds?

Autoflowering cannabis seeds result from a crossbreed between Ruderalis and indica or Sativa strains. Cannabis Ruderalis was once considered a wild weed, but it has been brought indoors in recent years to create new hybrid autoflowering cannabis. The Ruderalis genes allow the plant to flower automatically, regardless of the number of hours of darkness it receives.

This makes autoflowering cannabis strains ideal for growing in outdoor regions with shorter summer days due to their quick flowering cycles.

Autoflower cannabis seeds are easy to grow, especially when combined with the easiest marijuana strains to cultivate.

Below we cover some of the best and easiest strains to grow using autoflower seeds for both outdoor and indoor growers. But, before we get into the best autoflowering strains, there are some things to think about prior to buying your auto seeds.

At A Glance – Best Autoflower Strains

  • Green Gelato Auto
  • Purple Punch Auto
  • Pineapple Express Auto
  • Bruce Banner Auto
  • Girl Scout Cookies Auto
  • Durban Poison Auto
  • CBD Kush Auto
  • Northern Lights Auto

How long does it take an autoflowering seed to reach harvest?

how long do auto seeds take to grow

The easiest cannabis strains to grow are autoflower strains. Although the outcome for these autoflower seeds results in a smaller plant than traditional cannabis seeds when they reach maturity, the resulting cannabis plants will start to flower when they are ready.

This takes much of the guesswork out of gardening when it comes time to switch your LED grow lights to bloom.

The cannabis seeds, simply switch from veg to flowering on their own. Pretty cool results, and you can see why people love autoflowering strains so much!

Autoflowering cannabis seeds are a type of seed that will cause the plant to flower on its own after 2–4 weeks of growth.

Growers don’t need to change the light schedule in order to flower their plants. They will do it on their own.

Just as they would if growing feminized photoperiod cannabis.

Autoflowers mature much faster than traditional plants– some can be harvested 8 weeks after sprouting. Autoflowers are not only great for indoor growing, but they are also compact.

Autoflowers are not only convenient but also ideal for beginners in cannabis cultivation.

Autoflowering cannabis has unique growing traits that can be taken advantage of by more experienced growers as well.

Do autoflowering cannabis seeds have lower THC levels?

Some growers shy away from autoflowers because they believe these plants have lower THC levels.

The THC levels in autoflowering strains have improved significantly over the years, making them more psychoactive than ever before.

They have come a long way in a few short years.

Easiest Autoflower Seeds to Grow 2023

Green Gelato Auto – THC 24%

Flowering Green Gelato Auto Strain

Dispel the myth that autoflowering strains are delicate with Green Gelato Automatic – A robust and potent option.

This strain is a blend of Indica, Ruderalis, and Sativa genetics, which gives it both a sweet taste and high THC levels. Green Gelato Automatic will flower in as little as 8 weeks and is perfect for first-time growers.

Check current pricing

Seedsman – buy one get one

ILGM – Free Seeds

Purple Punch Auto – THC 24%

purple punch autoflowering seeds as they flower

For those who want an easy-to-grow autoflower with a high THC content, look no further than Purple Punch Automatic.

This indica-dominant hybrid has a sweet grape flavor and can reach up to 22% THC. Purple Punch Automatic is perfect for beginners as it is resistant to mold and pests.

With 24% THC, the effect is potent and relaxing but not drowsy. Rather than leaving you feeling lethargic, Purple Punch Auto will give you a sense of serenity and liberation from any pains or aches you may have had before. Whether you’re running errands or planning a night out with friends, Purple

Punch Auto can be the perfect assistant or companion.

Check current pricing

Seedsman – buy one get one

ILGM – Free Seeds

Pineapple Express Auto – THC 15 – 20%

When it comes to some of the best autoflowering cannabis seeds, Pineapple Express better be on this list!

If you’re looking for a delicious and productive strain of cannabis to grow, look no further than Pineapple Express Auto seeds. This strain is known for its fabulous flavor, high yield, and speedy growth. Even better, beginner growers find this an ideal cannabis strain for its high yields and dense buds that are easy to produce.

This indica-dominant strain is covered in very visible THC crystals. The THC content is about 15% while CBD is high.

The Pineapple Express Automatic strain is a Sativa-dominant hybrid with an unmistakably sweet and fruity flavor.

This autoflowering strain has high THC levels and is perfect for those who want a euphoric and uplifting high. Pineapple Express Automatic is easy to grow and can be ready to harvest in just 8 weeks.

Bruce Banner Auto Seeds – THC 25%

With this productive strain, you can expect up to 600g/m². Also, observe the intense trichome production not only on the buds but all over them.

This results in a beautiful hybrid with a slight Sativa dominance and an impressive 25% THC that leaves you feeling motivated, calm, and stress-free for hours on end.

The tall plants in this variety grow between 110-150cm and can be harvested 10-11 weeks after planting.

This strain’s flowering sites produce bright green buds with a terpene blend of sweet, berries, and diesel. This makes for great-tasting extracts and a delicious, coating on your mouth after every hit.

Girl Scout Cookie Auto – THC – up to 27%

The Girl Scout Cookies autoflower seeds are a hybrid of Durban Poison, OG Kush, and ruderalis traits. The THC levels in this strain are some of the highest you’ll find, at around 27%.

This autoflowering strain is perfect for those who want a delicious and potent smoke. Girl Scout Cookies Auto has a sweet and earthy flavor with hints of citrus. This strain is easy to grow and can be ready to harvest in 10 12 weeks.

Girl Scout Cookies is one of my favorite strains and produces a mellow high without any paranoia.

The autoflower version makes it faster and easier to grow. Makes for a great indoor grow, and was one of my first.

Durban Poison – THC – Up to 25%

Lighter on the indica genetics, Durban Poison is a powerful and invigorating strain of cannabis that hails from South Africa. I was fortunate enough to actually try Durban Poison in Durban, SA back in my 20s and was very impressed.

This Sativa-dominant hybrid has been popular for years and is known for its high THC content and energizing effects.

Durban Poison is easy to grow and can be ready to harvest in as little as 8 weeks. The THC content in this strain can reach up to 25%, so it should hit all the right spots.

This is a perfect strain for those who want an uplifting and energizing high. Durban Poison is great for creative endeavors, social situations, and physical activity.

The flowering stage for Durban is a no-brainer when you select it as an autoflower seed. One of our favorite potent strains to grow, this strain is like clockwork when it comes to flowering.

CBD Kush Autoflower – Very High CBD and Low THC

If CBD is your thing then thankfully we added this wonderful CBD autoflower to the list. CBD Kush autoflowering feminized seeds will produce plants with a CBD-to-THC ratio of 20:1.

This is a plant that does well both outside and indoors as it is very hardy and hard to kill honestly.

The buds are quite dense and have a sweet, earthy, and Kush-like flavor with hints of lemon.

CBD has been shown to have a wide range of therapeutic benefits, including reducing anxiety and depression, relieving pain, and even reducing the symptoms of epilepsy.

CBD is non-psychoactive, meaning it doesn’t get you high, making it a great choice for those who want the benefits of cannabis without the high. CBD is also legal in the US now, making it a great choice for those who want to stay within the law.

Northern Lights Auto Seeds – THC up to 23%

One of the best autoflowering seeds, Northern Lights is a potent strain that is very well received.

Auto strains usually do well in all types of growing environments, and this one is no exception. When grown indoors, it reaches 80 to 110 cm tall with a flowering cycle that takes 55 to 60 days. During the 2-4 week vegetative growth period prior to flowering, 18-20 hours of light per day produce about 500 grams/m2.

Outdoor plants can grow up to 80 – 150 cm in height and produce a maximum of 200 grams per plant.

Two outdoor harvests per season are perfectly possible in all but higher latitudes, with three being possible in Mediterranean regions, especially if starting each successive crop before the previous one is finished.

This plant is easy to take care of. It’s also resistant to fungus and pests, which is great news for gardeners. As this plant approaches the end of its life cycle, a range of shades including green, blue, and purple will appear and brighten up your day just like the real Northern Lights.

It can also handle colder climates compared to other strains like Gorilla Glue and offers a short flowering period if you are itching to get to harvest fast.

This cannabis Strain has a high THC level of 23% and a low CBD Level of 0.5%. The taste and smell are sweet and fruity with earthy notes of pine. This strain is known to Relax the body while improving mental clarity.

Autoflowering Strain FAQs

Will it hurt an autoflower to have 24 hours of light?

Autoflowers can grow under a 24-hour light schedule from seed to harvest; a dark cycle isn’t necessary. Some people feel that autoflower plants do best with a 20/4 light cycle, while others believe an 18/6 light cycle is more effective.

From personal experience with autoflowers I prefer a 20/4 light cycle myself but never noticed a huge difference. Autoflower seeds don’t seem to care.

What’s the best way to grow autoflowers?

Autoflower plants can be grown in a variety of ways, including hydroponically, in soil, or in coco coir. The best way to grow autoflowers is the way that works best for you. There is no one “right” way to grow autoflowers.

I’ve personally grown auto flowering seeds in soil, coco coir, and hydroponically, and all three methods worked well.

Where is the best place to buy autoflower seeds?

The best place to buy autoflower seeds is at a reputable online seed bank. Here is my top 5 reliable online seedbanks online:

  • Seedsman – Hard to find cannabis strains
  • ILGM (I Love Growing Marijuana) – Best seed bank for beginners
  • Quebec King Seeds – The best selection of auto seeds
  • King Crop Seeds – Best auto seeds pricing

Looking for some reputable seed banks? Check out >> Best Seedbanks of 2023

Autoflowering seeds vs photoperiod seeds

Autoflowering cultivars grow quickly and are simple to cultivate, while photoperiod strains take longer to mature but provide larger yields. It really comes down to personal preference which type of cannabis you want to grow.

If you’re looking for a fast, easy-to-grow plant, then autoflowers are a great choice. If you’re looking for bigger yields and more THC, then photoperiod strains are your ticket to grow.

Final Thoughts on Autoflowering Seeds

Autoflowering cannabis seeds are a great option for those who want to grow their own cannabis but don’t have a lot of experience. Perfect for beginner growers.

Cannabis plants from autoflower cannabis seeds are easy to grow and are very beginner friendly. Typically hardy seeds, that in the past, had a reputation for low THC levels, but nowadays we are seeing improved genetics.

If it is been a minute since you have grown Autoflowering seeds, it might be time to check them out again. Whether you grow outdoors or indoors, growing cannabis plants using autoflower strains can speed up the process and eliminate some plant-killing issues.

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About the author 


I discovered the benefits of Cannabis at a young age in 2002, with years of trial and error, my knowledge grew just like my plants. As my love for cannabis unfolded I began to teach and learn, trying to gain as much information and practical growing experience.

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