By Luke Sumpter

Autoflowering cannabis seeds are easy to grow, a joy to smoke, and offer great yields. They are equally suited for budding beginners and experienced cultivators seeking an efficient harvest. Check out the main benefits of autos below, and then explore five of the best autoflowering weed seeds to grow indoors.

Benefits of Autoflowering Cannabis

Autoflowering cannabis varieties come with a host of benefits that make them super easy to grow:

  • Resilient against pests and disease
  • Go from seed to harvest in 8–10 weeks on average
  • Small, stealthy, and easy to manage
  • Don’t require a change in light cycle to flower
  • Low demand for nutrients

Why Grow Autos Indoors?

Growing autos indoors allows cultivators to control all aspects of the environment. By managing watering, nutrients, and lighting, growers can strike the perfect balance that healthy cannabis plants need.

Outdoor plants offer great results, but they are exposed to the whims of nature—e.g. floods, strong winds, droughts, and a higher chance of pests and disease.

Growing indoors is also a better option in areas where cannabis is illegal. The use of a growing tent and carbon filter can keep plants out of sight and stinky terpenes out of the air, reducing the chance of getting busted.

Light Schedule for Indoor Autos

Unlike photoperiod strains, autoflowering strains don’t require a change in the light cycle to start flowering. These plants originated in darker and colder regions, and therefore don’t rely on external cues to progress through their life cycle. Instead, they do this all by themselves after a matter of weeks.

As such, you can maintain a light cycle of 18 hours on and 6 hours off throughout the entire growing cycle—nice and easy.

Quick Tips for Growing Autos Indoors

Autos are inherently easy to grow. However, cultivators can make matters even more simple by using these key tips:

  • Transplant once: After germination, place your seedling directly into its final pot to avoid transplant stress further down the line.
Autoflowering Cannabis Seeds for Indoor Growing
  • Go easy on watering: Only water when the top inch of soil becomes completely dry. Overwatering ends many grows before they even really get started.
Autoflowering Cannabis Seeds for Indoor Growing
  • Invest in good lights: Make lights your most expensive purchase. Poor-quality lights will stunt growth and reduce yields.
Autoflowering Cannabis Seeds for Indoor Growing

Can You Train Autos?

Yes! Training refers to manipulating the shape of your plant in a particular way, usually to increase yields or limit growth. While you can train autos, we suggest going with a low-stress method that won’t inflict too much damage.

Autos grow so fast that highly stressful training techniques can seriously reduce yields. By the time they recover, they’ll likely already have entered the flowering stage.

Instead, try out some LST to increase yields without hampering your plants’ development.

Top 5 Autoflower Weed Seeds for Indoor Growing

Behold; five excellent autos for cultivating indoors. Whether you have a whole room at your disposal or are working within a modified closet, you can achieve excellent results. Each cultivar offers something special to the grower, but all perform exceptionally well.

Quick One

Quick One serves as a perfect beginner plant. Her small size and low odour make her ideal for stealthy indoor growing. You can even cultivate her in cupboards or boxes to keep things really covert. She grows to a height of 50–60cm and produces a respectable 275–325g/m².

Quick One earned her name for her impressive brevity. Get ready to harvest these flowers 9–10 weeks after germination. Her buds pack a modest THC content of 13%, which hits the sweet spot every time. Enjoy a physically relaxing high augmented by tastes of citrus, earthiness, and fruit.

Quick One

Quick One
Lowryder 1 x Old School Indica
275 - 325 gr/m2
50 - 60 cm
5 - 6 Weeks
THC: 13%
Sativa 10% Indica 60% Ruderalis 30%
100 - 150 gr/plant
60 - 100 cm
9 - 10 weeks after sprouting
Physically Relaxing

Buy Quick One

Northern Light Automatic

Northern Light Automatic exerts a clear, euphoric high without significantly impairing cognitive function. She produces beautiful green-blue buds that harbour a THC level of 14%. Her Northern Light heritage and refreshing terpenes synergise to induce a clear and uplifting high perfect for staying focused and motivated during the day. Enjoy tastes of citrus, pepper, and pine with every hit.

Grown indoors, NL Automatic produces 500–550g/m². Hit her with some high-powered LEDs and LST to push her to the higher end of the spectrum. She’ll reach a maximum height of 120cm and produce a full canopy of buds only 10–12 weeks after you place seeds in the soil.

Northern Light Automatic

Northern Light Automatic
Northern Light x Ruderalis
500 - 550 gr/m2
80 - 120 cm
6 - 8 weeks
THC: 14%
Sativa 0% Indica 80% Ruderalis 20%
170 - 220 gr/plant
130 - 160 cm
10 - 12 weeks after sprouting
Clear, Uplifting

Buy Northern Light Automatic

HulkBerry Automatic

HulkBerry Automatic revs up the mind and gets the neurons firing. If you love an electrifying sativa experience, you need to grow this stimulating auto. Her insane THC level of 21% makes her one of the most potent autos available. Fire up these flowers during a wake and bake session to catapult yourself into action.

HulkBerry Automatic churns out large and sticky flowers in quantities of 450–550g/m². Keep her watered, fed, and illuminated, and you’ll be harvesting buds 8–9 weeks after germinating these seeds. Maintain a warm growing environment of around 20°C and watch her truly thrive.

Hulkberry Automatic

HulkBerry Automatic
Hulkberry x Diesel Auto
450 - 500 gr/m2
80 - 120 cm
6 - 7 weeks
THC: 21%
Sativa 65% Indica 30% Ruderalis 5%
100 - 150 gr/plant
80 - 120 cm
8 - 9 weeks after sprouting
Clear, Uplifting

Buy HulkBerry Automatic

Watermelon Automatic

Watermelon Automatic offers sugary tastes, gorgeous flowers, and a stoning high that will keep you mellow and relaxed for hours to come. This strain will put a smile on your friend's faces when you show them around your growing space. Her deep purple buds completely steal the show. But they aren’t only pretty; they pack a THC content of 20% along with a relaxing terpene profile that tastes of fruit, sugar, and candy.

Watermelon Automatic inherited all of her key traits from parents Tropicanna Cookies and Lemon OG, including her impressive yields. Grow this strain indoors to achieve a harvest of 450–500g/m². After sowing the seeds, get ready to sample her incredible flavours in as little as 8 weeks.

Watermelon Automatic

Watermelon Automatic
Tropicanna Cookies x Lemon OG
450 - 500 gr/m2
80 - 110 cm
6 - 7 weeks
THC: 20%
Sativa 20%, Indica 75%, Ruderalis 5%
50 - 90 gr/plant
100 - 120 cm
8 - 9 weeks after sprouting

Buy Watermelon Automatic

Green Gelato Automatic

Green Gelato Automatic grows quite large for an auto. Treat her to a bit more space than the other plants on the list to help her reach her full potential. In return, she’ll reward you with an aromatic bounty that holds a THC level of 24%. As one of the most potent autos around, she’ll send your mind soaring with a sativa buzz. Every toke offers mouth-watering tastes of candy, earthiness, and fruit.

This Green Gelato descendant allows growers to fill up their stash jars without sacrificing much space in their home. Grow her in the corner of your bedroom or a spare closet, and prepare to harvest 375–450g/m² only 9–10 weeks after germination.

Green Gelato Automatic

Green Gelato Automatic
Green Gelato x Cookies Auto
375 - 450 gr/m2
70 - 120 cm
7 - 8 weeks
THC: 24%
Sativa 55% Indica 40% Ruderalis 5%
100 - 175 gr/plant
100 - 120 cm
9 - 10 weeks after sprouting
Clear, Physically Relaxing

Buy Green Gelato Automatic

Are you aged 18 or over?

The content on is only suitable for adults and is reserved for those of legal age.

Ensure you are aware of the laws of your country.

By clicking ENTER, you confirm
you are
18 years or older