Top 5 Strongest Autoflowering Strains

20 January 2023
Autoflowering strains are those types of Cannabis plants that will automatically flower at a particular age. There are numerous benefits for you when growing autoflowering strains, such as the fact that you can produce many crops a year. In many ways, these plants are easier to grow inside because they are smaller and the reproductive and growing stages of the plant do not need to be separated.
20 January 2023
16 min read
Top 5 Strongest Autoflowering Strains

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  • 1. The top 5 strains
  • 1. a. Zkittlez auto
  • 1. b. Tropicana cookies auto
  • 1. c. Gorilla zkittlez auto
  • 1. d. Gorilla glue auto
  • 1. e. Banana purple punch auto
  • 2. Conclusion

Autoflowering strains are those types of Cannabis plants that will automatically flower at a particular age. There are numerous benefits for you when growing autoflowering strains, such as the fact that you can produce many crops a year, cultivate all year long independent of the season, and grow in harsher climates. In many ways, these plants are easier to grow inside because they are smaller and the reproductive and growing stages of the plant do not need to be separated. You will find that such plants also mature faster than the usual type of Cannabis as regular cannabis seeds can take up to 14 weeks or more whereas autoflowers take anywhere from 8 to 11 weeks, depending on the specific strain. The advantage of these automatic flowering varieties is also that you can grow them in countries where the growing season is shorter, and even if grown indoors, this is an advantage since you can begin harvesting sooner.

Experimenting with genetics has led to the development of different strains including several autoflowering strains of Cannabis. In this article we discuss the five strains that are rated as the strongest strains of 2019. How strong a particular strain is depends not only on the THC content but also on all other cannabinoids produced by cannabis plants such as THCV, CBN, CBG, CBD, etc…on top of that, there are other chemicals that interact synergistically with the cannabinoids to enhance the effects that one gets from the plant, they are called terpenes and flavonoids. 

Some of the strains have more of the Indica genetics while others are more Sativa-like in their features but rest assured all of them will produce the delicious sticky resin we all know. These autoflowering plants that you can choose from have been created through genetically crossing different strains of Cannabis to create plants that have the best combination of traits and the best possible production value.

1. The top 5 strains

Zkittlez Auto

This strain of Cannabis is known to be fast-growing, with growth taking just over two months. You can’t go wrong with this plant, and if you have never tried this strain you are in for a real treat. In fact, this plant strain has a strong sweet aroma and a high content of THC for your pleasure and enjoyment.

The Zkittlez Auto has been bred with many of the traits that are typically found in the Indica strain, including the high content of THC typical of such plants. Furthermore, this plant has long distances between the nodes and it produces large buds, which is an advantage in terms of productivity of an individual plant.


Zkittlez Auto
5 out of 5
Just an easy to grow, solid packed buds. A heavy feeder and can be a bit prone to light burn at the end but otherwise perfection!
Verified customer
Reviewed 21 November 2020


If you do choose to grow these seeds, then experts suggest giving the plant as much water and extra nutrients as possible to maximize the production of the buds, which will amaze you with their size. This strain also releases a strong yet appealing sweet scent.

The taste of this strain is that of sweets and fruit and it also gives you a nice relaxing sensation which, after all, is what you are wanting after a hard day of work. You should note that the plant does have quite a strong smell which is very noticeable when it is being grown indoors.

Tropicana Cookies Auto

Just like the Zkittlez Auto strain, the Tropicana Cookies Auto has more of the Indica features present due to its parental heritage, and offers an excellent blend of traits from hybrids that have been created in the past. You will enjoy the aroma since the plant does have a smell that is like lemon, which is due to the presence of the chemical limonene but also unique sandalwood and sweet nuances that just take it to a whole new level.

This is a strain of plant that has a high, over 27%, THC content while at the same time having a much lower concentration of CBD of less than 1% which helps produce a nice feeling overall. The plant growth is rapid with maturity reached and flowers being produced after approximately eight to nine weeks. Tropicana Cookies Auto is a strain that also produces large yields and super dense buds, therefore, a great choice for those looking for an extremely flavorful producer of THC.


Tropicana Cookies Auto
5 out of 5
So dank sticky and fruity smell full of tricoms and smooth smoke I love the terps...I recommend this strain it was really easy to grow.
Verified customer
Reviewed 5 October 2023


These facts are a good reason you would want to try these seeds, after all, a citrus smell is very pleasant in itself, plus you have the high THC content to look forward to. The plant can grow up to a height of just under or at 1.1 meter meaning it can easily be cultivated indoors.

The genetics of this plant is a combination of the Tangie and the Girl Scout Cookies Cannabis strains. This is a fantastic plant overall for you to try out, the colorful buds make it it is also very attractive in appearance and it’s highly recommended for beginners due to its easiness to grow. 

Gorilla Zkittlez Auto

This strain can be grown outside if you live in an area that has the right climate conditions for this variety to thrive where it can produce high yields reaching up to 350g/plant of beautiful flowers containing up to 27% THC. 

These plants can also be grown indoors, so you do not need to worry if you live in a colder part of the world since indoors you basically control the growing conditions, allowing you to keep a warmer temperature. Gorilla Zkittlez Auto was bred to be able to produce huge yields with little hassle so expect minimum maintenance yet maximum returns. This variety tends to reach up to 150cm so just make sure to have enough vertical space and you’re ready to go.


Gorilla Zkittlez Auto
5 out of 5
I went on a holiday for almost two weeks and trusted them to someone else and they survived. Not in the best condition haha but alive
Verified customer
Reviewed 9 January 2023


The genetics of this plant are a hand-picked combination of the Sativa-dominant Gorilla Glue and Girl Scout Cookies strain. You will notice that the plant grows fast, being ready to harvest in a little under 9 weeks. Most people are also pleased with the attractive look of the plant with its pleasing combination of purple, white and green colors.

This strain is reported by many people to produce a good feeling of relaxation and joyful bliss. In addition, this plant produces a lot of buds to harvest when the time comes, so you will not be disappointed.

Gorilla Glue Auto

The Gorilla Glue Auto strain is another popular plant with high THC levels of up to 24%, which means you get a very good effect from using this plant. It also grows fast with flower production beginning in as little as two months after seeds are planted.

The buds are often covered with a glue-like resin and the plant has a scent of pine about it. In fact, this is not surprising, an award-winning hybrid Cannabis that has remained popular with many customers over the years.


Gorilla Auto
5 out of 5
first time ever growing and got some amazing colors from this strain with low temps ran it at about 58-64 for 2 weeks and got this color
Jackin Meoff.
Verified customer
Reviewed 26 December 2017


The numerous buds and trichomes of the Gorilla Glue Auto strain mean that a lot of high-quality THC and other chemicals are produced relative to the overall size of the plant. You are likely to get much joy from the buzz you get from harvesting this plant since the THC is so high.

This particular strain usually grows almost 130 cm in height and the CBD content is very low at less than 1%. This is a good strain to choose to buy if you want a good high since the THC is produced at a very good concentration.

Banana Purple Punch Auto

This auto strain has become a more and more popular choice among people for some time, due to its beautiful colors and THC content that can reach up to 26%. This Indica-dominant hybrid is a great nighttime strain thanks to the THC concentration that results in a strong effect that really packs a punch while being ready for harvest in around 8 weeks.

Banana Purple Punch plants tend to grow up to about 120 cm in height and they are easy to cultivate both outdoors and indoors. The plant has a sweet, candy-like smell with an almost musky earth-like smell to it which is very noticeable and distinct. The name Banana Purple Punch should be a clue that there is something sweet about this strain, which you are likely to find very pleasing.


Banana Purple Punch Auto
5 out of 5
It relaxes both the body and mind and lets you do anything - working, driving if you need to. you just feel perfectly calm and focused.
Verified customer
Reviewed 10 September 2022


This plant strain has been improved on genetically and the parents are the Strawberry Banana hybrid strain combined with our Indica-dominant Purple Punch, thus why plants have many of the traits typically associated with the Indica type of Cannabis.

This strain produces really nice and dense buds with very little maintenance, making it a terrific choice for beginners to grow; You will certainly not be disappointed in this strain, from the enjoyable scents to the pleasing sensations you get from the THC. This is just one more winning combination that is sure to win awards in the future.

2. Conclusion

In conclusion, the strains we have discussed are all strong, having a THC content that is at 20% or greater so expect really strong autoflowers. These plants include award-winning strains that have been genetically created for easy cultivation and good production of buds and trichomes. You will find that these strains are both easy to grow and produce a high concentration of THC that can overwhelm even the most experienced consumers so make sure to start with ease!

The time from sowing seeds to harvesting is a little over two months for most of these plants, making them a great choice for those who want a quick turnaround without sacrificing the quality and quantity of the harvest. Each strain also has its own distinctive aroma and appearance which offer slightly different effects and benefits due to the different terpenes and cannabinoids present in cannabis plants. So if you want a strong THC-producing plant that is quick and easy to grow both inside and outside, look no further. Make sure to check out our autoflowering seeds strain catalog with many varieties to choose from, but here are the top five in terms of potency.

The flexibility of autoflowering strains means that you can be assured that the seeds you are buying are worth the cost and the time invested but always make sure to buy from reputable vendors as seed quality is probably the main factor that can cause issues during your grow cycle.