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Fastest autoflowering seeds

The fastest autoflowering varieties

Autoflowering cannabis strains are the fastest cannabis genetics on the market, but there are also some that are faster than others. In this post we will tell you which are the fastest autoflowering strains in the world.

Fastest autoflowering seeds

We find very fast autoflowering varieties, some of them can be harvested in only 6, 7 or 8 weeks after germination. When buying autoflowering seeds it is important to pay attention to all the details, because it is true that there are varieties that are very fast, but you may be surprised at harvest time, as some are fast, but do not produce much. Sometimes it is better to take a week longer and get higher yields.

Faster autoflowering plants Indoors

In indoor growing is where we can really grow autoflowering plants faster, if we give a light cycle of 20 hours our plants will grow much faster and also give more production. But the more light they receive the faster they will grow.

The fastest indoor autoflowering strains until 2022 are those that can be harvested in as little as 6 weeks.

Fastest autoflowering plants Outdoor 2022 / 2023

Attention, the seed brands say that they take the same time indoors as outdoors, but after all these years, we realise that outdoors autoflowering plants take a week longer than indoors, as they will never receive as many hours of light as we can give them indoors.

Still, the fastest outdoor strains until 2022/2023 will be ready to harvest in as little as 7 weeks of cultivation.

Autoflowering 6 weeks and 7 weeks

In this list we have selected 6 different varieties, which can be ready in as little as 6 weeks and others in 7 weeks.

Sweet Skunk Auto

Sweet Skunk Auto by Sweet Seeds is a 3rd generation feminised autoflowering cannabis seed. The bank Sweet Seeds tribute to this classic and beloved cannabis family. Hybridization between an elite clone of Early Skunk and an automatic version of Critical from the R & D department of Sweet Seeds. The resulting hybrid has been backcrossed twice with the Early Skunk elite clone.

Sweet Skunk Auto is a fast flowering variety, very resinous and productive, producing dense buds covered with trichomes. Intense Skunk-like aroma with a very sweet and musky background with hints of spices.


Growing time: 7 Weeks


Sugar Mango Auto

Sugar Mango Ryder Autoflowering from World of Seeds, in this cross, our breeders have contributed the gene responsible for the autoflowering pattern, and at the same time tamed the genetics of a pure Brazilian sativa like our Santa Maria mother, with our Cannabis Rudelaris specimen. The result is an indica-dominant autoflowering cannabis plant.

The aroma and taste of the Sugar Mango Ryder Autoflowering is fruity sativa, at the same time we obtain plants with a bigger branching and development, and a more abundant flowering with medium resistance to mould and pests.

Sugar Mango Ryder - Word Of Seeds - Fastest autoflowering

Growing time: 7 Weeks


La Diva Auto

The La Diva Autoflowering from Delicious Seeds is a cross between Blueberry and IL Diavolo Autoflowering, bringing blue tones to our ultra-fast variety, maintaining at all times the dominant autoflowering gene in these crosses.

La Diva Autoflowering will surprise you by giving a new aroma and colour to your indoor grow room at any time of the year. Medium resistance to mould and high resistance to pests, it will amaze both beginners and advanced growers with its yields.


Growing time: 6 Weeks


La Bella Afrodita Auto

La Bella Afrodita Auto by Delicious Seeds, the cross between an IL Diavolo Autoflowering and AK 47 Autoflowering, reveals a new generation of automatic plants, bigger and with higher yields than their predecessors. Plants that can reach from 70-120 cm, and produce long branches, loaded with long and dense buds covered with resin glands, medium resistance to mould and high resistance to pests.

The smell of La Bella Afrodita Autoflowering contains typical Afghan overtones. Let yourself be surprised by this new generation of autoflowering strains that will fill your home with joy every three months. The taste of this cannabis is fruity citrus and the effect of La Bella Afrodita Autoflowering is very medicinal.

La Bella Afrodita Auto - Delicious Seeds - Fastest autoflowering

Growing time: 7 Weeks


Kalashnikova Auto

Kalashnikova Auto by Green House Seeds is an autoflowering cannabis seed strain that is the result of crossing Kalashnikova with Green O Matic. Under optimal conditions, both indoors and outdoors, it can reach 70-100 cm in height.

It is a cannabis plant with a spicy aroma and flavour, with a fast-rising effect that leaves you with a very strong body sensation. In outdoor growing in optimal conditions we can harvest up to 100 grams per plant and in indoor growing with 600 watt lamps up to 800 gr/m2.

Kalashnikova Autoflowering in optimal growing conditions is able to complete its cycle in 7 weeks with a photoperiod of 12 and 18 hours of light per day.

Kalashnikova Auto - Green House Seeds - Fastest autoflowering

Growing time: 6 Weeks


+ Speed Auto

+ Speed Auto by Sweet Seeds belongs to the 3rd generation of autoflowering cannabis seeds. Hybrid result of crossing a strain of Critical Mass autoflowering Sweet Seeds R & D department, selected for its fast flowering and its pleasant and intense aroma, and a selected strain of Speed Devil #2 very fast flowering.

The result of the + Speed is a very fast-flowering cannabis plant that yields thick buds laden with aromatic resin. Sweet and fruity aromas with hints of yeast and cheese.

+ Speed Auto - Sweet Seeds - Fastest autoflowering

Growing time: 7 Weeks


Autoflowering 8 Weeks

In the previous list we have seen the fastest ones, but in the next one we will see strains that can be ready in as little as 8 weeks and many of them are much more productive than the 6-weekers. But if you are looking for yields, check out our yields post.

Cream Caramel Auto

Cream Caramel Auto by Sweet Seeds, are feminized autoflowering cannabis seeds of our new version of Cream Caramel. The result of crossing our best autoflowering strains with Cream Caramel.

Cream Caramel autoflowering is a variety of superior quality, with dense buds and high resin production, intense sweet aroma with earthy tones, fastest flowering, strong effect and great hybrid vigour.

Cream Caramel Auto - Sweet Seeds - Fastest autoflowering

Growing time: 8 Weeks


Green Poison XL Auto

Green Poison XL Auto from Sweet Seeds seedbank, is a feminized autoflowering cannabis strain. The Green Poison XL Auto is born from the cross between two Green Poison Auto, thus developing a larger version, with great production of flowers and resin.

Green Poison XL - Sweet Seeds

Growing time: 8 Weeks


Northern Light Blue Auto

Northern Light Blue Auto by Delicious Seeds is a predominantly indica autoflowering strain with a great medicinal effect. It is ideal for relieving chronic pain, giving you a pleasant feeling of well-being, and at the same time a sedative effect. Ideal for long periods of meditation and relaxation. Northern Light Blue Auto crosses Northern Light Auto with Blueberry is a medium sized plant resistant to mould and pests, producing a large central bud, and many side buds, loaded with dense plant matter and lots of resin crystals.

Northern Light Blue Auto - Delicious Seeds

Growing time: 8 Weeks


Watermelon Auto

Watermelon Auto by Royal Queen Seeds is a sativa-dominant autoflowering cannabis seed that takes only 8 weeks to grow, with a tropical flavour and a glorious aroma, very sweet and balanced. Its psychoactive and strong effect will make it a special combination.

Watermelon Auto - Royal Queen Seeds

Growing time: 8 Weeks


Super Critical Auto

Super Critical Auto by Green House Seeds is an autoflowering cannabis plant resulting from the cross between Big BudSkunk x White Widow. The effect of this cannabis is physical, very fast, with a narcotic side and a very relaxing finish. Super Critical Autoflowering is medicinally effective against pain.

Super Critical Autoflowering is a medium-sized robust cannabis plant, excellent to grow in SoG, and can be flowered indoors at any time of the year between 12 and 18 hours of light per day, outdoors it can be flowered at any time of the year as long as the temperature does not go below 10ºC.

Super Critical Auto - Green House Seeds

Growing time: 8 Weeks


Hulkberry Auto

Hulkberry by Royal Queen Seeds is a fastest flowering autoflowering cannabis seed. It is a Sativa-dominant seed that provides a motivating effect, develops creativity, stimulates mental alertness and gives energy to face the day. It will be ready for harvest in just 8 weeks of cultivation.

Hulkberry Auto - Royal Queen Seeds

Growing time: 8 Weeks


Fastest autoflowering on the market

The fastest autoflowering plant on the market can be ready in 6 weeks of cultivation, but for this it must be in the best conditions and parameters. In order to achieve this, we must work with cannabis fertilisers, a good percentage of humidity and grow them in 20 hours of light.

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