If there’s one thing that both rookie and expert cannabis growers love, it’s growing auto-flowering seeds.
Not only are they easy to grow, but they’re also fit for indoor and outdoor cultivation. They’re fast-blooming and very low maintenance.
That said, you and I know they can be quite expensive sometimes…
This is why we’ve made this list of the best autoflower seeds from reputable seed banks.
We’ve made sure to include autoflower strains with high THC (up to 27%), good yields (up to 650g), and most importantly, good prices and deals (as low as $4/seed).
Let’s get started.
Best Autoflower Seeds for Sale: First Look and Reviews
- White Widow [ILGM] – Best auto seeds overall (free US shipping)
- Lemon OG Haze [Seedsman] – Refreshing, potent strain (from $5/seed)
- Jack Herer [ILGM] – Original medical cannabis strain with 5% CBD
- Purple Kush [Crop King Seeds] – Whole body relaxation
- Bubble Gum [Seedsman] – Ready to harvest in only 9 weeks (from $4/seed)
- Northern Lights [ILGM] – Strong Indica strain for tension relief
- Afghan [Crop King Seeds] – Sit back and watch a good movie
- Gorilla Cookies [Herbies Seeds] – High 27% THC auto seeds
- Green Crack [Seed City] – High yields of up to 650 g/m2
- Sour Diesel [ILGM] – Feel on top of the world
1. White Widow (ILGM) – Best Autoflower Seeds Overall
Auto White Widow has been the favorite autoflowering strain of novice and advanced growers since the 1990s.
It’s the brainchild of Green House Seeds and exhibits the best characteristics of its parents – the South Indian Indica strain and Brazilian Sativa Landrace.
With two highly potent Indica and Sativa cannabis strains mixed into one, you can expect a nice balance starting with cerebral stimulation followed by a mellow and soothing feeling.
This Indica-dominant hybrid has about 19% THC, but you won’t experience the typical couch-look effect of other Indica varieties. Instead, you’ll get a gentle bliss of relaxation and happiness marked by a pungy and earthy aroma.
Are you feeling stressed?
Well, you should know that White Widow is almost the best auto strain to unwind and forget your worries since it generally doesn’t lead to anxiety or paranoia.
In terms of growth, this 1995 Cannabis Cup winner is suitable for indoor and outdoor growing, as well as sunny and cool climates. It’s compact and blooms automatically without light manipulation.
Finally, with only 10 weeks from seed to harvest, even beginner growers could be smoking the delicious White Widow in no time.
2. Lemon OG Haze (Seedsman) – Best Autoflower to Grow Indoors
Tracing its roots back to the Lemon OG, Haze #1, and AK-48 strains, Lemon OG Haze is one of the best autoflowering cannabis seeds.
I’ll be honest − even though it’s suitable for both outdoor and indoor growers, you’ll find it much easier to cultivate indoors.
This predominantly Sativa strain exhibits a lemon-like aroma and taste with small hints of pine. Puffing it will make you remember what it’s like to sip a refreshing glass of lemonade in the scorching heat.
What about potency?
Well, Lemon OG Haze has up to 20% THC and around 5% CBD, making its effects quite vivid. You’ll experience a racy yet clear and uplifting feeling during your first few puffs. But the Indica component of this strain also brings out relaxing effects after a while.
With roughly 20 hours of light exposure, you can get high yields reaching 425 g/m2. You’ll also see its flowers blooming between its 10th and 12th week.
3. Jack Herer (ILGM) – The Original Medicinal Autoflower
If you’re hoping to feel empowered and have plenty of happy thoughts at the same time, the Jack Herer auto-flowering seed may just be ideal for you.
This Sativa-dominant hybrid initially acted as a medical cannabis strain before becoming a popular recreational strain. It’s well-loved because of its impressive effects and easy growing conditions.
Speaking about effects…
The Jack Herer strain has superior genetics that brings euphoria to your body almost immediately. And with up to 20% THC in one bud, you can expect its effects to linger for a while without being too overpowering.
It also boosts your creativity, mood, and energy. Just be careful because this strain can cause cottonmouth and, sometimes, anxiety.
Every puff will leave your mouth filled with hints of pine and spice. Jack Herer also has an aftertaste reminiscent of lemon and orange juice. You may even catch whiffs of cake and pepper.
4. Purple Kush (Crop King Seeds) – Best Autoflower Genetics
The Purple Kush autoflower cannabis seeds exhibit qualities reminiscent of Purple Afghani, OG Kush, and Hindu Kush.
It’s predominantly Indica and grows wide plants with thick dark green buds.
Several tokes of this Indica-Sativa-Ruderalis strain will leave you with a solid high. But you should know that the first few puffs may not be as soothing as you expect them to be. In addition, you might experience light coughing because of its high acidity.
Despite this, Purple Kush has a fruity and sweet aftertaste to neutralize this discomfort. You’ll also enjoy hints of berries, pepper, and sandalwood filling your room.
Do you have a hard time falling asleep?
Since this seed has a blend of Indica-Sativa and Ruderalis strains, you’ll experience a pleasurable feeling across your body and mind. But with 70% Indica, it’s an ideal cannabis strain for a peaceful and calming sleep.
Beginner growers beware: this strain is highly sensitive to temperature and humidity changes. But it has a high tolerance to molds and other common diseases.
5. Bubble Gum (Seedsman) – Fastest Autoflower Strain
Are you not the “patient” kind?
Well, Bubble Gum is for you. With the right amount of sunlight, the autoflowering strain takes only 9 weeks from seed to harvest.
Besides, it’s been around since 1993 and contains the top qualities most tokers want in fast buds.
For one, these feminized seeds exhibit an extremely fruity scent complemented by a sweet and lingering taste. In addition, it has palettes of strawberry, bubblegum, and cherry.
And when mixed, you’ll feel like you’ve had a refreshing fruit smoothie to start your day.
On top of its flavor and aroma profile, the Bubble Gum Autoflowering strain produces large and dense buds. That means you’ll feel your body relax with every puff.
6. Northern Lights (ILGM) – Best Indica Auto Flower Seeds
The Northern Lights autoflowering cannabis seed is a popular Indica-dominant hybrid bred from indigenous Afghani Indica and Thai Sativa strains.
It’s one of the all-time favorites and has given rise to the famous hybrid strain, Super Silver Haze.
Tokers will also enjoy puffing this strain’s buds. It exhibits a soothing feeling in your mouth, topped with a sweet and spicy scent.
You’ll be left with a euphoric high and relaxing body effects. Your stress, tension, and sleepiness should also disappear.
This Indica-dominant strain is beginner-friendly because it’s highly resistant to diseases, which makes up for the relatively longer flowering period of 10-14 weeks from seed to harvest.
For the best yields, we suggest growing it outdoors in a sunny climate.
7. Afghan (Crop King Seeds) – Best Autoflowering Seeds for Better Sleep
Do you want to sit back and relax?
If so, Afghan autoflower is perfect to watch a good movie. (or even a bad one, you’ll enjoy it anyway!)
Don’t let its relatively mild 17% THC content fool you − it is potent enough to make you feel a strong buzz followed by a soothing sensation.
A single puff of this Indica-dominant strain will bring in a wave of motivating feelings and end with a deep relaxation. It puts you in a state of trance and will cause you to laugh and smile more.
You can also expect a strong earthy aroma with slight hints of sweet and pine flavors. The Afghan autoflower cannabis seeds are also extremely resistant to molds and mildew and can be grown by inexperienced growers.
8. Gorilla Cookies (Herbies) – Most Potent Autoflower Strain (Strongest)
Do you know what strain combines the potency of Gorilla Glue and the flavor palette of Girl Scout Cookies?
You guessed it − Gorilla Cookies.
Unlike the other autoflowering cannabis seeds we discussed, this strain has the highest THC content (up to a whopping 27%), so beginners should stay away from it.
Because of this THC dose, expect a wave of different emotions with an impressive aroma and flavor profile. It’s the best late-night and after-work strain if you want to get stoned.
Your first few puffs will make you taste mint chip cookies complemented by highly euphoric effects. You then get a well-balanced mix of sweet diesel, lemon, and kush on every exhale.
The Gorilla Cookies autoflower seed is compact and is ideal if your growing space isn’t too big. It can also resist most temperature, humidity changes, and pests. To get the most out of your auto seeds, outdoor cultivation is the best way to go.
9. Green Crack (Seed City) – Super Autoflowering Seeds with High Yields
The Green Crack autoflowering strain fills your body with a rush of mango-flavored adrenaline. It’s charged with immense energy, topped with an extremely fruity flavor.
As one of the most popular strains in the world, this Sativa-dominant hybrid is most suitable for daytime blazing sessions. It has up to 20% THC and low levels of CBD in every bud.
That’s enough to keep you going without ending up in a couch-lock.
Looking for high yields?
Well, you can expect this plant to grow snow-white buds with yields that reach up to 650 g/m2 after a short flowering period of 8 to 9 weeks. This is quite impressive for an autoflowering version.
10. Sour Diesel (ILGM) – Best Auto Strain for Energy
With a blend of 40% Indica and 60% Sativa, the Sour Diesel autoflowering strain reaches up to 20% THC content. It’s an ideal go-to for stoners who want to achieve a psychedelic high.
Simply put − you’ll feel like you’re on top of the world.
You’ll also have good vibes and become more willing to take on new responsibilities.
The Sour Diesel Indica-Sativa autoflower has a strong aroma of diesel fuel. It also exhibits a pungent odor with small hints of herbal notes and sour lemon.
Buying Guide − How to Pick the Best Autoflower Strains
Knowing the best autoflowering marijuana seeds in the market is not enough. Even though autoflowers are easier to grow than photoperiod seeds, there are still other things you need to look into when buying different strains.
Like photoperiod seeds and feminized seeds, auto strains all have their own potency and profile. They also have varying growing conditions to produce high yields.
Below are the most important factors to make sure you grow the right autoflowering plants:
Indica vs. Sativa Strain
Most auto seeds are either Indica- or Sativa-dominant. If your strain is Indica-dominant, expect relaxing and calming sensations. On the other hand, a Sativa-dominant strain will generally make you feel a euphoric high.
THC vs. CBD Level
The THC and CBD content of a strain can greatly impact your desired effects. Since THC is a psychoactive compound, strains with higher doses of THC will leave a solid and lasting high.
Meanwhile, those with higher CBD, a less psychoactive compound, will make you feel more relaxed and calm.
Indoor vs. Outdoor Growing
Some autoflowering strains grow wider rather than taller. Other strains may also thrive in different climates more effectively. That’s why it’s important to check your seed’s expected height and width and your local climate.
Brand Reputation and Reviews
Only buy autoflowering strains from top seed banks. Genuine reviews from previous customers and multiple awards given by legitimate cannabis contests can be great indicators of a highly reputable seed bank.
Although autoflowering strains grow more easily than other types of cannabis seeds, it’s still good practice to check whether your chosen autoflower seed bank offers a germination guarantee policy. With this, you can get a full refund or replacement if the auto seeds don’t grow as expected.
Because of strict laws and regulations, some cannabis plants and seeds get seized by Customs. To minimize this type of occurrence, check if your seed bank has a stealth packaging option.
Best Autoflowering Strains and Seed Banks – FAQ
We gathered the top questions about autoflowering seeds from other rookie and professional cannabis growers.
Take a quick look through them and get higher yields during cultivation:
What Is the Highest Yielding Autoflower?
The Green Crack cannabis seeds from Seed City are the highest-yielding autoflower seeds on our list. They can yield up to 650 g/m2.
What Autoflower Seeds Grow the Fastest?
Bubble Gum autoflower seeds grow the fastest, with an average flowering time of only 9 weeks.
Who Has the Best Autoflowering Seeds?
ILGM has the best autoflowering seeds, with popular strains such as White Widow, Jack Herer, and Northern Lights.
What Is the Strongest Autoflower in the World?
Gorilla Cookies are the strongest autoflower seeds in the world, with THC levels reaching up to 27%.
What Seed Bank Has the Most Autoflowers?
Seedsman has the most autoflowers, with more than 1,000 different varieties. These include popular and rare autoflowering strains such as Pineapple Express, Alaskan Diesel, and Forbidden Runtz.
What Is the Best Way to Germinate Autoflower Seeds?
The best way to germinate autoflowering seeds is to use the paper towel method. With this simple method, the seeds will sprout within 24 to 48 hours.
What Is the Best Organic Soil Mix for Autoflowering Seeds?
The best organic soil mix for autoflowering seeds is a mix of peat moss, compost, perlite, and vermiculite since autoflowering strains only need a few nutrients and well-aerated soil.
Best Autoflower Weed Seeds − Wrapping Up
Well, you now have plenty of auto-flowering strains to choose from − from high THC to high-yielding marijuana seeds, whether you’re looking for a relaxed or uplifting high, and more.
To sum it up…
Auto White Widow (free shipping on ILGM) is the best autoflowering strain, with a good balance between Indica and Sativa, easy to grow for beginners, a reasonable 425g yield, and 19% THC.
Lemon OG Haze (from $5/seed on Seedsman) is a strong second choice for its relaxing, potentially therapeutic benefits.
That said, don’t forget to check local laws and regulations before you buy autoflower seeds.
And while you’re waiting for your marijuana seeds to reach you, feel free to read a few guides to get off on the right foot.
Disclaimer: This article does not encourage growing marijuana where it is not legal to do so.
The news and editorial staff of the Bay Area News Group had no role in this post’s preparation.