What Are Autoflowering, Feminized, and Regular Seeds?

Fast Buds breaks down the different types of cannabis seeds to help you choose the right one for you.
Author Ryan
19 February 2018
5 min read
What Are Autoflowering, Feminized, and Regular Seeds?

  • 1. Autoflowering seeds
  • 2. Regular seeds
  • 3. Feminized seeds (feminised for you commonwealth folk)
  • 4. Are autoflowering seeds right for you?


Choosing the right seed requires more than just selecting sativa or indica, or even picking the right strain. Photoperiod, feminized, autoflower, regular- the varieties seem endless. In this article, Fast Buds will break down the differences to help you choose the best seed for your garden.

Autoflowering Seeds

A summary of autoflowering cannabis seeds

These are Fast Buds specialty, and the easiest kind of seed to grow. To start, all of Fast Buds' autoflower seeds are feminized (sometimes referred to as autofem), meaning they'll grow into high-THC bud-producing plants. What seperates auto seeds from plain feminized seeds is how fast they can grow and flower.

All cannabis plants grow in two main phases, vegetation and flowering. Vegetation is where the plant builds up its frame to support large flowers. Flowering is where plant puberty kicks into gear, and those sticky buds start popping. If growing regular or feminized seeds the transition from vegging to flowering is controlled by light. The plant remains vegging so long as it receives around or more than 18 hours of light. Once that number drops, the plant switches mode and kicks bud-production into high gear. If these seeds are grown outdoors, the Earth's axis controls the light and plants will begin to flower as the days become shorter during the late summer and fall. If grown indoors, the grower can control this light schedule to enter flowering only when they choose to do so.

Autoflower seeds are different. They enter flowering according to their pre-programmed genetic clock, usually three to four weeks after germination. This gives them the shortest lifecycle of any variety of cannabis seed. Strains like Fast Buds' Blackberry can grow to full maturity in nine weeks. Growers who want to harvest quickly, or perform multiple harvests each year, prefer autoflowers.

For example, Fast Buds' growers in certain equatorial countries live in climates so wet and rainy that the growing season only lasts three months. Feminized and regular cannabis plants die before they can reach maturity. Autoflowers, on the other hand, can easily grow from seed to harvest in three months. The growers contacted Fast Buds to tell us about their situation, and we set them up with a variety of seeds from our catalog, including LSD-25, Girl Scout Cookies, and CBD Crack which can all be harvested before the rainy season.

Another advantage is that growers can stagger autoflowering grows to harvest every three to six weeks. Regular and feminized seeds require that vegging and flowering plants be kept in separate areas, as they have very different lighting requirements. Many growers don't have the space to keep their plants in two different tents. Autoflowers can be kept in one tent regardless of where they are in their lifecycle. Say someone had room for four plants in their indoor-area. By planting one seed a month, they could ensure they harvest every four weeks without fail- AKA the eternal harvest.

For a more in-depth explanation, don't miss our All About Autflowers series. Part one describes what makes autoflowering cannabis special. Part 2 goes over the advantages and disadvanteges of growing autolfowers. Fianlly, part three discusses the history and breeding of these new and novel seeds.

Regular seeds

A summary of regular cannabis seeds

Regular seeds are, as you might imagine, normal seeds you'd place in the ground, just like any other plant. Regular seeds are the most stable variety available, allowing growers to craft the perfect environment for their plant. Their predictability makes them the seed variety of choice for those who absolutely must grow the same crop every time.

This stability comes with a price. Regular seeds are produced by pollinating female cannabis plants and collecting the seeds. However, half of those seeds will grow into male plants, which produce none of the THC-rich flowers we're looking for. After germinating regular marijuana seeds, cultivators must wait for these unproductive plants to express male traits, and then destroy them. Males left in the same space as females will pollinate them, ending flower production early.

Since regular seeds require growers to sacrifice half of their crop, they have to plant twice the number they need. This extra labor is just not worth the extra genetic stability for many, particularly those with limited space planting for personal use.

Feminized Seeds (Feminised for you commonwealth folk)

A description of feminized cannabis seeds

In order to avoid sacrificing half of the seeds they germinate, many growers opt for feminized seeds, which almost always grow into healthy, female adults. How are these seeds created?

When left in a stressed and in a single-sex environment, cannabis plants will start expressing traits of the opposite gender. So a female cannabis plant can produce pollen to fertilize itself. These seeds produced by these self-pollinated females only contain DNA from the mother, and will grow female, like the mother.

All this gender-bending and self-polinization takes its toll. In order to create feminized seeds, breeders select plants from lines that are prone to expressing hermaphroditic traits, which can appear in their offspring. So, while you won't need to sacrifice half your plants if you grow feminized seeds, you may end up with a hermaphroditic plant that can fertilize and destroy your whole crop if you don't remove it from your tent or garden.

Are Autoflowering Seeds Right For You?

We'll leave you with one last advantage to consider. Autoflowering plants grow shorter than other varieties. Instead of a tree, they often resemble a bush. This makes them perfect for those with limited space who value discretion. A one meter tall Fast Buds' Blue Dream'Matic is much easier to tend to in secret than its two meter tall regular or feminized cousins.

Regardless of your situation, we hope this guide helps you choose the right seed for your tent or garden. Don't forget to sign up for our newsletter to receive a 20% discount on your first order, and stay up to date on the latest deals from Fast Buds: American Autoflowers.

Girl Scout Cookies Auto
Girl Scout Cookies Auto
Sativa 40%/Indica 60%
Girl Scout Cookies Auto
9 – 10 weeks
450 – 600 gr/m2
60 – 100 cm
Up to 20%
< 1%
Buy seeds from 13,00 €
1 fem
13,00 €
2 fem
24,00 €
3 fem
36,00 €
5 fem
55,00 €
10 fem
99,00 €
25 fem
215,00 €
50 fem
365,00 €
100 fem
590,00 €
500 fem
1 950,00 €
1000 fem
3 400,00 €
3 fem
Add to Cart
36,00 €

Author Ryan
19 February 2018