What Is the Fastest Flowering Autoflower?

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Are you wondering what the fastest flowering autoflower could be? Or are you thinking of where you can get the fastest auto-flower seeds? If yes, you have come to the right place; experts at 420Fastbuds have come up with a list of the fastest flowering autoflower and its detailed specifications.

Autoflowering seeds have long been a go-to for most plant breeders, hence the need for proper knowledge on fast flowering auto-flowers. However, before we dive into the fastest autoflower seeds, let’s discuss what autoflower seeds are and their benefits. 

What Are Autoflower Seeds?

Autoflowers are a special kind of cannabis known for their fast growth and germination without light. They are unique, and as the name implies, they automatically grow into a flower in a few weeks, with or without light.

Autoflower seeds have become a popular innovation in plant breeding as they grow fast and help breeders make plenty of harvests. These seeds blossom in about 4-5 weeks after germination.

What makes them unique? They don’t take much time to grow into a cannabis plant ready for harvest and sale. Check out some of the interesting benefits of autoflowers that make breeders want them.

Benefits of Fast Autoflower Seeds

Autoflowers have come a long way for breeders, and there are varieties worldwide. Now, you might be wondering what benefits they offer to breeders. We have the answer, so read on.

They Increase Harvests

This is one of the key benefits of fast autoflowers; they shorten growers’ harvest time, increasing their annual sales. Though their auto sizes might be small, they allow you to produce multiple harvests in a timeframe like the usual time you harvest regular photoperiod strains.

Grow Easily

Most of the autoflower seeds inherit the characteristics of the ruderalis species, which makes them grow well under cold conditions. Also, most of them are from central North America; hence they survive harsh conditions, making them resilient and allowing them to grow in any condition.

Fast Flowering Period 

Another interesting benefit of autoflowers is their fast-flowering period. Usually, photoperiod strains take ten weeks to bud indoors and a few months outdoors. On the other hand, an autoflower is ready for harvest in 40-50 days.

Lists of the Fastest Flowering Autoflower

By now, you understand that the most important benefit of autoflower flowering is its speedy growth. With this in mind, below are some fastest flowering autoflowers. The following autoflower is ready for harvest within eight weeks:

Tropicana Cookies Auto

Tropicana cookies are the perfect fast autoflower for most growers. Their strain grows very well indoors and outdoors, producing up to 500 gr/m2. It has 27% THC, which is high to lift your mood and keep you going all day.

It has been discovered to be used for appetite loss, chronic stress, and mood swings. Tropicana strains have energetic qualities making them fit to lift your mood. This plant has a dark purple color, and it tastes and smells nice. It is a perfect choice for extract.


  • THC: 27%
  • CBD: <1%
  • Genes: 40% Sativa, 60% Indica
  • Taste: Sandalwood or Lemon
  • Flowering period: 8 – 9 weeks
cannabis hand

Banana Purple Punch Auto

This is one of the most potent autoflower, and it is perfect to be grown indoors and outdoors. Banana Purple punch auto tastes heavenly, giving your mouth a gummy taste; it grows about 120 cm and produces over 550 gr/m2.

Its strains are perfect for the night as it lulls you to sleep, giving you a sound rest. Banana Purple Punch Auto develops nice flavors in just a few weeks.


  • THC: 26%
  • CBD: <1%
  • Genes: 25% Sativa, 75% Indica
  • Taste: Banana, Fruits, or Strawberry
  • Flowering period: 8 weeks

Gorilla Punch Auto

Gorilla punch Auto is the best Sativa autoflower in the 2022 Autoflower World Cup. It is perfect for eye treatment. Gorilla Punch Auto is an excellent balance to get a positive drive to get work done. With about 120 cm height, it yields 550 gr/m2.

It has a sweet citrus smell when inhaled and a lemon mousse with Cinnamon when exhaled. The smoke, due to the THC content, helps lift your mood, making it the perfect extract.


  • THC: 26%
  • CBD: <0.5%
  • Genes: 45% Sativa, 55% Indica
  • Taste: Lemon, Spicy or peppery
  • Flowering period: 8 – 9 weeks

Cinderella Auto

An old yet potent autoflower that leaves you craving for more. It possesses a multiple-side branch. Cinderella auto focuses on your energy, keeping you motivated and spirited.

Cinderella yields significantly at about 120cm height up to 550 gr/m2. It gives your mouth a sweet taste like citrus.


  • THC: 23%
  • CBD: <1%
  • Genes: 65% Sativa, 35% Indica
  • Taste: sweet, pineapple and peach
  • Flowering period: 8 – 9 weeks

Trainwreck Auto

This is a fast autoflower that needs low maintenance and very little extra effort. It grows up to 120cm in 9 weeks, yielding 550 gr/m2. Trainwreck Autoflower leaves you calm and at rest, keeping you motivated. The Indica content relaxes your muscle, relieving pain.


  • THC: 22%
  • CBD: <1%
  • Genes: 55% Sativa, 45% Indica
  • Taste: lemon, pine, spicy, sweet
  • Flowering period: 8 – 9 weeks

Final Thoughts

No doubt, a fast autoflower is perfect for growers as they yield multiple harvests; we have discussed some of the fastest autoflower varieties to explore.