About Our Feminized Autoflower Seeds

Why Choose Autoflowers?

There is a certain simplicity that comes with Feminized Autoflower Seeds. They can be planted almost anytime, anywhere. The simple fact that they are not affected by light cycles makes them a perfect choice for areas with light pollution or areas that experience abnormal or extreme light fluctuations. For indoor cultivation, they are perfect if you have extra room in your vegetative area or if you don’t have more than one grow area and you want to cycle multiple generations at one time. In other words, one grow-room can accommodate a continuous harvest of flowering plants simply by staggering the plantings. Outdoors, autoflowers can be planted all summer with a calculated harvest 75-100 days after planting, this allows opportunity for multiple harvests and serves a great purpose for those looking for summer harvests without utilizing cumbersome light deprivation techniques. Autoflowers also offer a huge advantage for cultivators in areas that experience early winters or detrimental fall time climatic conditions. The plants are generally small and are perfect for people who are trying to be discrete or simply don’t have the space for huge full-term cannabis plants. Despite what some cynics say, the potency, yield, terpenes, and bag appeal of good quality autoflowers rivals that of photoperiod cannabis. Are autoflowers for everyone? Absolutely not, however they serve a great purpose for the cannabis cultivation community.

The Beginnings: The Twenty20 Autoflower Seeds Program 

The process of breeding Feminized Autoflower Seeds differs significantly from that of breeding photoperiods.  The process of breeding a new auto variety can be accomplished in one of two ways.

1. Cross two autoflower strains together to make a new autoflower strain (F1).
2. A photoperiod strain can be “transformed” to an autoflower strain through the tedious process of introducing the autoflower trait to a photoperiod and solidifying that trait over multiple generations.

Although Option 1 is much more simple, it provides no pathway for introducing photoperiod strains into the autoflower realm.

Option 2, the long road,  is a much more time consuming process that involves multiple generations of selective breeding which in-turn creates new cultivars that are completely unique to the cannabis community.  In order to maintain breeder distinction and integrity,  we take the long road.  Our original “donor” autoflowering varietal is called Double White which was sourced from and bred by a guerrilla grower in the rainforests of Puerto Rico.  We chose this equatorial variety because of its extreme mold resistance, vigor, and adaptation to growing in low light conditions.   After stabilizing the Double White for a few generations, we introduced it to our genetics.  What we quickly learned is that our decision to breed autoflowers seeds from “scratch” paid dividends.  Because the process takes multiple generations, we are able to selectively breed each generation and therefore further improve upon the subsequent generation.  Our breeding program utilizes a “1%er” strategy that involves starting 100 or more plants for every one that we keep. This method allows us to very effectively breed out unwanted characteristics and only select the best of the best.

Why Choose Twenty20 Feminized Autoflower Seeds?

By Growers, for Growers

Cultivating and breeding cannabis isn’t a job for us, It’s a hobby, a lifestyle, and a passion. We are cultivators who breed and breeders who cultivate. We understand the ups and downs of cannabis farming and we understand that the recipe for success starts with good genetics and transparent, comprehensive data. We want nothing more than to help farmers succeed with our genetics so please reach out to us anytime for information or questions. We carry bulk autoflower seeds for professional cultivators. Please use the “Contact Us” tab to request our bulk autoflower seed price list.

Strain Stability

Coming from a commercial cultivation background, our team recognizes the importance of strain stabilization. Although this may be less important to hobbyist growers, it is absolutely imperative to commercial cultivators. This stability is essential for a handful of reasons:

1. Autoflower strains with low phenotypic variation are more likely to begin and end flowering at the same time. Unstabilized autoflower genetics tend to have a wide-ranging variation in flower ripening times.
2. Uniform plant sizes are crucial for viable commercial cultivation and uncommon with many autoflower varieties.
3. Uniform plant nutrient requirements are essential in order to effectively and efficiently grow large crops.
4. Stable potencies, uniform terpene profiles and consistent bag appeal are all factors that are absolutely imperative to commercial cannabis cultivation success.

We practice a wide range of advanced techniques in cultivar stabilization but we also recognize that no two seed plants are identical. In order to provide the cultivator with transparency and a discernible means for determining the phenotypic stability of a particular batch of seeds, we have developed a data driven, industry leading classification system called the Phenotypic Variation Index or PVI. For a in-depth description on the PVI classification system please visit our publication at twenty20mendocino.com/PVI

Outdoor Tested, Outdoor Approved

We understand the important role of feminized autoflowering seeds has in outdoor and greenhouse cultivation. 100% of our autoflowers have been tested and bred in either greenhouses or in outdoor gardens.

Data Driven, Data Transparency

In order to best serve cultivators, we have developed the industry’s most comprehensive data driven classification system for our autoflower seeds. We recognize the long term investment that goes into farming and the importance of proper cultivar selection.

• Origins: Most autoflowering strains have complex genetic lineage that can’t simply be summed up as “A x B” We use the term “origins” and list as many as the closest relatives as possible.
• Filial Generation: (F1, F2, etc). This can characterize the stability of the genetics but should not be used as a definitive way to make that determination. Instead refer to our PVI scale (Phenotypic Variation Index)
• PVI (Phenotypic Variation Index): This is a classification system we have developed in order to provide cultivators with information regarding the likelihood of having similar phenotypes from a specific batch of seeds. This index refers to a scale of 1-5. 1 represents very little variation and 5 represents maximum variation between phenotypes. (Please refer to our case study entry for more information.)
• First sign of flower: In days. The day count when the seedling emerges from the soil or when the sprout is planted in soil. The days listed represent the time in which over half of the plants are visually showing female flowers. This number is usually a good indication on how large the plants will get. All of our tests are completed in 1 gallon pots, grown in a mixed-light greenhouse.
• Total life cycle in days: This is the amount of days from the emergence of seedlings to harvested flowers. Days listed represent the time to harvest for 50% or more of the total plant population. This data is extrapolated from our test gardens in a mixed-light facility from plants grown in 1 gallon pots. * the higher the PVI the more variation you should expect in life cycle days.
• Height index: On a scale of 1-5 this is the overall plant size you would expect at final harvest. This index is a relativity index comparing the average height of a particular strain with other Twenty20 autoflower seeds. Final height will vary based on environmental growing conditions. Height may or may not be an indicator of final yield, (please refer to Yield Index) * the higher the PVI the more variation you should expect
• Yield Index: On a scale of 1-5 this is the overall plant yield you would expect at final harvest. This index is a relativity index comparing the average yield of a particular strain with other Twenty20 Feminized Autoflower Seeds.
  . * the higher the PVI the more variation in yield you should expect
• Aroma (Nose): This category is subjective and not based on laboratory data. * the higher the PVI the more variation in aroma you should expect
• Miscellaneous notes and bulletins: We reserve this section for various notes and bulletin announcements. These notes are generated by both our in-house cultivation team and outside users. This can be updated regularly