Fast Autoflowering Seed Strains

Only with auto-flowering strains can you grow almost anywhere and still get a good harvest between 55 and 75 days after germinating the seeds.

lowryder autoflowering indoorWhat’s fast autoflowering cannabis and why is so popular?

Auto-flowering cannabis strains are different from most types of marijuana in that they begin to flower (produce buds) not long after germination and continue to do so throughout their life cycle.

(The original auto-flowering cannabis strains are called Ruderalis but they didn’t contain any psychoactive substances like THC so they were bred with potent Sativas and Indicas to make a whole new strain of cannabis – auto-flowering strains that will get you high!)

Most cannabis strains need equal spells of dark and light every 24 hours before they will begin to start budding. If the plants are exposed to more than 12 hours of light every 24 hours then they will continue to grow but not flower or form buds. Bummer!

Not so with auto-flowering cannabis. These suckers will start to flower a few weeks after germination and continue to flower for their short but potent life cycle.

So if you’re growing in a room that can’t be kept completely dark for at least 12 hours a day you’ll want to get auto-flowering seeds. Perfect for my buddy who grows under lights in his rec room (also for folk growing outside in urban areas with excessive light pollution).

autoflowering feminised indoor cannabis seedsSome auto-flowering cannabis strains are also fast to grow which makes a shorter wait for harvest time. This means you can be harvesting your crop in as little as two months after germinating the seeds.

Outdoors, this means you can plant and harvest two or three crops in a summer growing season.

Indoors it means you can have at least 5 crops from seed to harvest each year.

Now don’t expect huge 450+ gram harvests for each plant from these small but mighty strains. 30 to 120 grams harvested from each feminised auto-flowering seed is more likely. (For biggest harvests, see auto-flowering strains Purple Power,  Jock Horror, and Swiss Cheese below). If you want to harvest large quantities of high-grade marijuana every two months you’ll have to grow a dozen or more of these autoflowering strains at a time!

Below is a list of the best autoflowering cannabis strains available to buy on-line in feminised seed form. Each strain below has been selected for the following qualities: speed, potency, effect, taste and popularity.


Top 4 Auto-flowering Feminised: Sativa-dominant

Sativa-dominant dope produces an uplifting, energetic cerebral high when smoked.

Limoncello Haze Auto – seed to harvest in 60-70 days

limoncello haze fast autoflowering seedsLimoncello Haze autoflower is a predominantly Sativa super strain bred from Silver Haze, Lemon Ice and Ruderalis.

It’s named for its gorgeous citrus flavour, loved by smokers and vapers alike.

Limoncello Haze autoflower can be grown outdoors or in. Its buds begin to develop within a month of germination and become tight and hard.

Limoncello Haze won the High Times cannabis cup in 2008 and 2009 and Limoncello Haze auto is an equally high-quality strain with just a six week flowering period.

With up to 22% THC, the Limoncello Haze high starts surprisingly smoothly, buzzing in your body before moving up to your head.

Limoncello Haze auto is popular not only for recreational use but also medical use, being helpful for pain relief and insomnia in particular.

For more information on Limoncello Haze Autoflowering feminized seeds click on the button below (packs of 10 and 20 seeds are also available):

Get 5 Limoncello Haze autofem seeds for $60 (approx. €49 or £43)

limoncello haze fast autoflower seeds order page


Jock Horror – seed to harvest in 70 – 80 days

jock horror fast autoflowering seedsJock Horror is a specialized hybrid from Nirvana Seeds including genetics from Northern Lights, Skunk and Haze.

This super hybrid is renowned for its high resin production – even its branches will sparkle!

Jock Horror autoflowering are tall for an auto and one of the most high-yielding – you can expect 200 – 300 grams per square metre of growing space.

Jock Horror is considered a White strain and a medical marijuana.

You’ll enjoy a unique fresh herbal flavour with Jock Horror and a real energetic head high.

For more information on Jock Horror autoflowering feminized seeds click on the button below:

Get 5 Jock Horror autofem seeds for €30 (approx. £27 or $37)

jock horror fast autoflowering seedsNote: Jock Horror is by Nirvana Seeds and is inspired by the legendary Jack Herer strain by Sensi Seeds.


Swiss Cheese – seed to harvest in 70 – 80 days

swiss cheese fast autoflowering seedsAn offspring of a Swiss Cheese clone with a Jock Horror automatic (above), Swiss Cheese autoflowering is tasty, pungent and powerful.

So pungent that you’ll want to be mindful of her smell – not one for discreet guerilla growing!

She’ll give you a sizeable harvest for an autoflower though – up to 350 grams per square metre in a Sea of Green set-up, for example.

You won’t have long to wait either, with a flowering period of just 7 – 9 weeks.

Swiss Cheese auto has more Sativa genetics than the regular Swiss Cheese strain so you’ll get a real head high with Swiss Cheese autoflower yet with the same classic strong Cheese taste and smell.

For more information on Swiss Cheese autoflowering feminized seeds click on the button below:

Get 5 Swiss Cheese autofem seeds for €25 (approx. £22 or $31)

swiss cheese fast autoflowering seeds


Purple Power – seed to harvest in 65-75 days

Purple Power autofem seedsPurple Power autofem – a relative newbie from Amsterdam Marijuana Seeds – is worth a special mention. Not only because it’s a fast autoflower, but because it’s one of the best strains for growing outdoors in cooler northern climes.

A cross of Dutch Dope and Skunk, Purple Power auto is hardy enough to cope with brief cool summers of north-western Europe and Canada.

It’s also a high-yielder for an auto, with possible harvests of up to 650g per square metres outdoors. So you’ll get a sizeable mass of glorious sticky purple buds with a nice skunky smell. And a euphoric yet relaxing head trip.

For more information on Purple Power autoflowering feminized seeds click on the button below (packs of 10 and 20 seeds are also available):

Get 5 Purple Power autofem seeds for $40 (approx. €33 or £28)

northern lights fast autoflowering seeds


Top 3 Auto-flowering Feminised: Hybrids

Hybrid cannabis strains produce a balanced Sativa/Indica effect when smoked – a cerebral high with a relaxing body stone.

Northern Lights – seed to harvest in 65 – 75 days

northern lights fast autoflowering seedsNorthern Lights is one of the most potent and famous Indica strains ever created.

Nirvana SeedsNorthern Lights has become the most popular hybrid because of its higher potency and reduced flowering time.

Highly adapted to indoor growing, Northern Lights seeds grow into high-yielding plants that can finish in around 7 – 9 weeks.

A stocky plant, Northern Lights is famous for its proliferation of dense, resiny buds which have a honeyish musky aroma when dried. It’s a fairly odourless plant when growing though, making Northern Lights automatic a good choice for guerilla growing.

Northern Lights seeds are also fairly easy to grow so a good choice for novice growers. You can expect good yields with this auto too – 200-300g per square metre of indoor grow space.

The effect when smoked is a potent body stone that’s comfortably lazy and relaxing with a mild pleasant head high to go with it.

For more information on Northern Lights autoflowering feminized seeds click on the button below (packs of 10 seeds are also available):

Get 5 Northern Lights autofem seeds for €19.95 (approx. £18)

northern lights fast autoflowering seeds


O G Kush – seed to harvest in 65 – 80 days

o g kush fast autoflower seedsThis Nirvana Seeds OG Kush autoflower is a cross of an original OG Kush mother from Lake Tahoe (in the US Sierra Nevada) with the Northern Lights automatic.

It’s a killer combination. OG Kush autoflower seeds grow into rich-yielding plants with a dense rounded bud structure, much like that of traditional Kush strains.

Suitable for outdoor or indoor growing, OG Kush autoflower feminized seeds give a sizeable harvest of up to 350g per square metre of grow space, flowering for 7-9 weeks.

As for the effects, OG Kush automatic has a clean fruity (lime-like) aroma and gives a high that is balanced physically and mentally – a long strong body stone with a cerebral lift.

For more information on O G Kush autoflowering feminized seeds click on the button below:

Get 5 O G Kush autofem seeds for €25 (approx. £22 or $31)

og kush fast autoflowering seeds


Forest Fruits – seed to harvest in 70 – 80 days

forest fruits autofem seedsA  cross of New York Turbo Diesel and Blueberry 420, Forest Fruits auto is a new strain from Amsterdam Marijuana Seeds.

It can be grown inside or out will be ready to harvest after 8 weeks of flowering. And what a harvest you’ll get – up to 450g per m² indoors and up to 800g m² outside.

Forest Fruits is possiby the highest-yielding autoflower, and is a lovely smoke: a fruity flavour with a touch of Diesel, and a relaxed and fairly gentle high.

For more information on Forest Fruits autoflowering feminized seeds click on the button below (packs of 10 and 20 seeds are also available):

 Get 10 Forest Fruits auto-fem seeds for $75 (approx. €61 or £53)

forest fruits fast autoflowering seeds


Top 3 Auto-flowering Feminised: Indica-dominant

Indica-dominant dope produces a sedative, relaxing, chill-out body-buzz when smoked.

Lowryder (Ganja Dwarf) – seed to harvest in 55 – 65 days

lowryder ganja dwarf fastest autofloweringLowryder is the original psychoactive autoflowering strain, and Ganja Dwarf is Amsterdam Marijuana Seeds version. Other than its ruderalis genes, it’s fully Indica.

The fastest autoflowering strain there is, Lowryder / Ganja Dwarf is also the shortest (hence the name), staying under 50cm tall and thus the perfect strain for guerilla growers or anyone needing to be discreet or short on space.

With a flowering period of just 6-7 weeks, Ganja Dwarf is ready for harvest just 8 to 9 weeks after germination. It’s also a reliable strain which is easy to grow – good for novice growers.

Ganja Dwarf / Lowryder is not a particularly high-yielder – you can get around 150 grams per plant. However, it is good potent Indica bud with the effect of a stoney relaxing (narcotic-like) body-buzz characteristic.

For more information on Ganja Dwarf autoflowering feminized seeds click on the button below (packs of 10 and 20 seeds are also available):

Get 5 Lowryder/Ganja Dwarf autofem seeds for $40 (approx. €33 or £28)

lowryder fast autoflowering seeds


Green-O-Matic – seed to harvest in 55-60 days

green-o-matic autoflowering feminised cannabis seedsGreen-O-Matic is perhaps the fastest auto-flowering strain available with an estimated harvest date only 55 to 60 days after harvest!

That record time includes two weeks of vegetative growth before beginning to flower for 5-6 weeks.

This mainly Indica strain has been developed from Moroccan and Asian strains by the Greenhouse Seed Company.

It has a sweet, spicy smell and the effect is a potent, fast-hitting, and long lasting stone when smoked.

The THC content is a substantial 15+% and it is reported to deliver 800 grams per square metre of grow space.

For more information on Green-O-Matic autoflowering feminized seeds click on the button below:

Get 5 Green-O-Matic autofem seeds for €25 (approx. £22 or $29)

green-o-matic fast autoflowering seeds


Pineapple Express – seed to harvest in 65-70 days

pineapple express weedPineapple Express autoflowering feminized is a potent Indica-dominant strain that produces awesome smelling bud in a short time.

A hybrid of White Widow x Limoncello Haze x Strawberry Ice, Pineapple Express is potent and of course, fruity in taste.

Pineapple Express auto-fem grows into a stocky and bushy plant, packed with thick large buds.

It can be harvested in as little as 9 weeks after germinating delivering 15 to 30 grams of potent sweet smoking pot per plant.

Pineapple Express is a lovely smoke – that fruity pineapple taste with a relaxing Indica body buzz – and a decent head buzz too, with roughly 18% THC content.

Since it’s high in CBD (cannabidiol) too, Pineapple Express is a good choice for growing for medical use, being especially good for stress relief.

For more information on Pineapple Express autoflowering feminized seeds click on the button below (packs of 10 and 20 seeds are also available):

Get 5 Pineapple Express autofem seeds for $55 (approx. €45 or £39)

pineapple express fast autoflowering seeds


cannabis seeds disclaimerPlease Note: In most countries, including the UK, it is legal to trade and possess auto-flowering cannabis seeds. In many countries however, it is against the law to cultivate fast autoflowering marijuana.

We provide information on auto-flowering cannabis seeds as a law-abiding service. We do not endorse the cultivation of fast autoflowering marijuana where it is illegal to do so. In jurisdictions where it is illegal to cultivate auto-flowering marijuana we provide growing information and advice purely for scientific and entertainment purposes.

Please check your local laws before germinating auto-flowering cannabis seeds.