Autoflowering Cannabis Yields | How Much Can I Harvest?

Author Luke Sumpter
26 January 2023
Top tips and what affects the yields of autoflowers!
26 January 2023
53 min read
Autoflowering Cannabis Yields | How Much Can I Harvest?

Read more
  • 1. What does "yield" mean?
  • 2. Factors to consider
  • 2. a. Indoor vs outdoor cultivation
  • 2. b. The different lighting options available for indoor cultivation
  • 2. c. Pot size
  • 2. d. Nutrients used
  • 2. e. Plant count
  • 2. f. Plant training
  • 2. g. The cultivar
  • 3. Our highest yielding autoflowers
  • 3. a. Gorilla cookies auto
  • 3. b. Orange sherbet auto
  • 3. c. Wedding cheesecake auto
  • 4. Top tips on how to get bigger yields
  • 5. In conclusion

There are several reasons a person may wish to grow autoflowering Cannabis at home, whether it be for taste, effect, medicinal value, or yield. The amount an autoflower can produce will be the difference between how full your curing jars get, and how successful you are as a grower. Autoflowering cannabis plants most commonly yield anywhere from 50-250g, but that can be affected by a huge range of factors. From genetics to the size of the grow container, what nutrients are used, and whether the crop is grown under artificial light in a controlled environment or left to fend for itself outdoors. Our top tips will help you get the most out of your autos!

Autoflowering strains have somewhat of a stereotype surrounding them. Back in the day, these varieties were disregarded by some growers because of their lack of potency and productivity. However, huge steps forward in breeding mean that modern autoflowering strains are much stronger and offer superior harvests. While they don’t produce the mammoth yields of gigantic sativa specimens, they’re the perfect choice for growers with limited space indoors and outdoors. They won’t grow out of control, but will still produce jars filled with pristine buds come harvest time. But how much of a yield can you realistically expect to harvest from these varieties at the end of the growing cycle? Find out the answer below. 

1. What Does "Yield" Mean?

Yield refers to the estimated amount of buds produced and can be measured as dry or wet weight but after you’ve harvested, trimmed, and dry your cannabis plants, that is the final amount of dried buds and the official yield. You will notice that seed banks will often display the yield in a square meter scenario, as opposed to the dried weight per plant. Not only can a figure such as "450-550gr/m2" be misleading, but there are also many variables that will play a factor in the outcome of this value.


How much do autoflowers yield: meaning

Yields can be measured as dry or wet weight but the official yields is the amount of buds after drying.

These variables include internal and external factors. Internal variables include the unique genetics of each plant. Even among the same strain, plants display some degree of genetic variability. Seeds from the same parents will all produce plants with slightly different characteristics, including size and yield. Of course, external factors play the most important role. These variables include nutrients, water, and light. Optimal levels of these inputs will help plants achieve their true genetic potential. In contrast, when growers fail to meet these demands, plants will underperform and produce the bottom end of the yield potential of a particular cultivar.

So how much weed does a plant yield? If you’re wondering how to maximize autoflower yields, read along and improve your yields with our tips!

2. Factors To Consider

Indoor vs Outdoor Cultivation

When growing autoflowering cultivars outdoors, the climate plays a massive role in the outcome of your yield. Outdoor growers depend on the seasons to be able to get good yields from autoflowers, this happens because autoflowering cannabis plants depend on the right temperature, humidity, and sunlight to thrive, and this will reflect on the quality and quantity of the buds you’ll harvest.


A timelapse video of plant's growth from seed to harvest made by one of our growers.

People who live in hot sunny climates will be able to grow an autoflower all year long with excellent results, but those who experience shorter summers with cold winters may not harvest as much as someone in a tropical climate, who can expect to grow multiple times per year with superb results. However, because autos grow so fast, they can still produce excellent results in northern latitudes. Even growers up in Alaska, other northern States of the US, the UK, and northern Europe produce excellent results. By timing things right, you’ll be able to transplant an auto outdoors after the last frosts of the season and watch it surge in size over the next couple of months.

However, heat also plays an important role. Those in warmer southern climates have a big advantage. The heat helps plants grow much faster, meaning plants in these regions will reach a great size before they start flowering, resulting in superior yields earlier in the growing season. Now, when growing indoors you don’t have to worry that much about the environmental conditions outside because you are responsible for controlling every single aspect of the growing conditions, this can be a good thing for more experienced growers but if you’re new to growing indoors, it can be quite tricky if you don’t have access or can’t afford the right equipment.


Stage Day temp. Night temp. Relative humidity

First half of vegetative

(week 1-2)

22-28°C 18-22°C 70%

Second half of vegetative

(week 3-4)

22-28°C 18-22°C 65%


(week 5)

20-26°C 20-26°C 60%

First-half of flowering

(week 6-8)

20-26°C 20-26°C 55-50%

Second half of flowering 

(week 9-10)

18-24°C 17-20°C 50-40%


As you may know, autoflowers need certain conditions in each stage of growth, but as a general guideline, you should keep the temperature between 18-24°C  and the humidity should be kept around 70% in the vegetative stage, gradually lowering it until you reach 60% near the pre-flowering stage. Then, when your autoflowers are starting to form the buds, the humidity should be around 50%, reaching 40-45% at the end of the flowering stage.

It is an accepted fact that for the vast majority of growers, indoor cultivation will usually result in larger yields. Of course, if you live in a climatic region that offers perfect growing conditions for cannabis then this may not always be the case, but for the most part outdoor cultivation is a bit of a gamble. With an indoor grow the cultivator has a high level of control over a wide range of factors that are usually at the mercy of the gods for outdoor cultivation methods. This is not to say that you can’t grow autoflowering beasts outdoors, just that it is easier in an indoor environment.

The Different Lighting Options Available for Indoor Cultivation

While controlling the temperature and humidity is highly important, the number one factor that will affect the size of the yield and the potency of the final product is the type of light you choose for your indoor grow. There are multiple options available, but really only two if you want to maximize your yield size - HID and LED.

HID Lights

For decades, HID lights were the absolute gold standard for indoor grow rooms. Thanks to their high power they are able to offer far better light spread and penetration than almost every other option, and two of the globe types work really well for the different growth stages in terms of the type of light provided. MH (Metal Halide) globes offer a light spectrum that is more on the blue side of the scale, which is exactly what plants in the veg growth stage are looking for. HPS (High-Pressure Sodium) globes offer a light spectrum that is more reddish, which is great for plants that have switched over to the flowering stage of their lifecycle.

But these lights do come with some downsides. They are very power-hungry, meaning they’re certainly not the most economical to run. They need a separate power ballast which can cost as much, if not more than the lamps themselves. The lamps cost about $100 each and need to be replaced about once a year, depending on how often they are used. They also produce a lot of heat, which can be a pain to deal with and can severely affect the crop if left unattended. But, if you are able to mitigate these downsides you are almost guaranteed bumper yields with HID lighting.

LED Lights

While LED lighting options have been around for more than a decade for indoor growers, it’s only in the last 2 or so years that they have really taken over the mantle as the best option, kicking HIDs off the top spot. They offer a range of advantages over their HID cousins. 

First up, the light spectrum that they produce can be finely tuned to give the plants exactly what they need throughout the entire grow cycle. HID lights lack certain parts of the light range that LEDs can cover (such as green). LED panels also consume way less energy than HIDS, and run much cooler. This means that there is much less chance of burning your plants, and environmental control is easier. It also means that you can light the area in a totally different way than with HID lights. You can quite literally have led panels wherever you want - above, below, and right inside the canopy if you please. This allows for ridiculous amounts of light penetration. 

LEDs used to be prohibitively expensive, but recent shifts in the market has meant that the price has dropped dramatically, to the point where they are now cost around the same as a new HID setup. Do be aware that there are lots of cheap options out there, but you should definitely steer clear of the cheapest options. They simply will not give you the results you are hoping for. 

This is not to say that you can’t grow autoflowering beasts outdoors, just that it is easier in an indoor environment. One way you can help boost environmental control with outdoor cultivation is by using a greenhouse. And when we say greenhouse, we dont necessarily mean a huge, expensive glass structure. A greenhouse can be as simple as some plastic sheeting, some PVC pipes, a couple of lengths of 2 x 4, and some elbow grease to get the whole thing together. You can also just head to your local gardening suppliers and pick up a ready-to-go option.

Pot Size

Not everyone has the luxury of growing in a meter square grow space, and some must resort to a small, discreet autoflower count that can be kept on a balcony, terrace, or back garden.

Depending on where you’re growing your cannabis plants, you will have to choose either a bigger or a smaller pot and this will end up affecting how big your autoflower grows, and consequently, the yields.

For example, if you are growing a large-sized autoflower in 10-12 liter-sized pots, you will be able to harvest 50-150g per autoflower as long as the conditions are optimum, so if you prefer smaller autoflowers and use smaller pots, the yields will be decreased.

  • There is no need to grow an autoflower in pots bigger than 12 liters.
  • Sea of Green requires a smaller pot size of 5-7.5 liters.
  • Planting directly into the ground is also a good option.

Overall, pot size has a very big influence on yield, especially when growing only 1–2 plants. Autoflowering strains grow wonderfully in a 12L pot and produce rewarding results. However, growers can push things further with larger pots. Containers of up to 20–30L enable the root system to grow much larger, meaning the aerial parts of the plant also grow bigger. However, you’ll need to facilitate growth well to ensure your plants don’t become stunted, preventing their roots from filling to pot and rotting away. Provide a high level of light and a proper nutrient regimen and you’ll push yields right to the upper end of the spectrum. 

Likewise, you can also use smaller pots if you want to keep things super stealthy. A small pot of around 5L will produce small plants that are easy to conceal. However, using LST and a powerful light can still result in surprisingly good yields.

Nutrients Used

Supplementing your autoflowers with a rich source of N-P-K (macronutrients) and trace elements (micronutrients) is certainly one way to enhance production. Investing in organic nutrients or a complete living soil will be advantageous, as long as you maintain the ideal watering ratio.

This is because organic nutrients work different from synthetic nutrients.


How much do autoflowers yield: nutrients

Both organic and synthetic nutrients feed your autoflower but work differently.

Organic feeding consists of maintaining a good soil with beneficial microorganisms that form a symbiotic relationship with your cannabis plant, this way the fungi feed on the sugars produced by plants while they break down nutrients and retain water in the rhizosphere which makes it easier for your autoflower to absorb nutrients and hydrate.

On the other side, synthetic nutrients consist of feeding the roots directly, this means that you don’t have to maintain a healthy soil because synthetic nutrients can actually kill the microorganisms present, so despite being easier to feed synthetic, it’s easier to overfeed and end up burning your plants.

If feeding with synthetic nutrients, then follow the recommended guidelines when making your nutrient solution.

  • You will want to feed your autoflower only plain water for the final 2 weeks, to allow the autoflower to flush.
  • Some cultivars will be able to uptake higher amounts of a nutrient solution than others.

Plant Count

Another thing that will affect your yield is the number of plants you have in your grow space, you have the option to grow a few large-sized autos, or many smaller ones packed together in a Sea of green, each have their own advantages and disadvantages. 

For example, if you’re growing in a 1m2 grow space you will have to choose between making the most of just one or two big autoflowers or grow up to 6 smaller autos, this is up to you, obviously.

It is always a good idea to know in advance if you can grow a Sea of Green, SCRoG, or prefer to let your autoflower to grow naturally. 

Sea of Green

If you are choosing to grow many small autoflowers packed closely together, then make sure the cultivar is well suited for that setup. You want to go for a shorter autoflower that grows relatively homogeneous, this way you can fit in between 6-10 autoflowers in a meter square, planting in 5-7.5 liter pots.


How much do autoflowers yield: sea of green

SoG allows you to grow a lot of smaller autoflowering plants, which can end up increasing the yields.


When growing in a SCRoG setup, you can go for whatever you want, obviously, you won’t be able to fit 20 autoflowers in 1m2 but because this technique consists of shaping your autoflower into a dense canopy, you can get away with growing from 2-5 autoflowers in 7-10 liter pots. As long as you’re filling your SCRoG net properly, you’ll get a nice dense canopy and great results.

Big-Sized Plants

For some, it can be more practical to grow 1-3 bigger-sized autos, and for this, we recommend using a pot size between 10-15 liters to allow your autoflowers to grow to their maximum, reaching up to 150cm in some cases.

Plant Training

When it comes to autoflowering cultivars, it is best to apply certain training techniques to different cultivars. This will encourage a much bigger and more productive harvest, exposing the autoflowers to more direct light and increasing yields further.

We only recommend plant training if you can benefit from that or if you’ve had experience before because you can end up stressing your autoflower and that will have the opposite results, less plant growth, and lower yields.


How much do autoflowers yield: lst

LST allows you to shape your autoflower into the desired structure without stressing it too much.

There are two types of plant training, LST and HST, both of them serve growers to help modify and shape the structure of an autoflower to either make the most out of the light fixture or control the size of the plants if you have a limited grow space.

Low-stress training (LST) basically consists of bending or tying down the branches without mutilating the plants, as the name says, it’s less likely to stress your autoflowers when compared to HST and it’s what its usually recommended for autoflowers but you can get away with HST if you know what you’re doing, have in mind that LST requires patience and more work when compared to HST because you are shaping your plants gently day by day.


How much do autoflowers yield: topping

Topping results in similar results but it can be too stressful for autoflowers.

High-stress training (HST) consists of mutilating your cannabis plants, either by topping, defoliating, or fimming, you will have the same results as when performing LST but you will have less work because once you’ve cut a part of your plant, the work is done.

  • Low-stress training means tying the highest parts of the plant down, to create an even-growing canopy of large-sized buds.
  • It is best to avoid any type of plant training after your autoflowers have started flowering.
  • Using a SCROG setup can increase yield and allow for a much more efficient growing space.

For the vast majority of autoflowering strains, we do not recommend using HST techniques. Any time you stress a plant you will stunt the growth for anywhere between 4 to 10 days, and with the genetic inbuilt timer that auto-flowering strains possess there is simply not enough time for the plants to recover. In the long run, you will end up diminishing the size of the yield, and possibly the quality of the final product. Unless you have a bunch of experience under your belt, and really understand the way a certain strain grows, then stick to LST techniques. 

The Cultivar

If you’re a home grower and want to make the most out of each seed or if you’re a commercial grower and you prefer production before anything else, then finding the best genetics to aid in this job will give you the upper hand, obviously, growing the highest yielding autoflower is the way to go but there are basic things you should know. There is a wide range of Indica and Sativa characteristics in hybrid autoflowering strains, with some being more rewarding than others when it comes to yield. 


How much do autoflowers yield: cultivar

Even if you have the best growing conditions, you should look for the best genetics that suits your growing condition.

Now, don’t think that Sativa-dominant hybrids always yield more than Indica-dominant, even though Sativas grow more and consequently yield more, Indicas produce denser buds that, even though it might seem they produce less, they can end up weighing more.

So have in mind that although you should choose your genetics-based on how much they yield (if you’re looking for high yields) you should choose a strain that better suits your growing style and your growing conditions.

Always keep in mind:

  • Some cultivars may take longer to flower and yield more than others.
  • Certain strains are better suited for cold and others for hot climates.

3. Our highest yielding autoflowers

Gorilla Cookies Auto

Gorilla Cookies Auto is not only a high-yielder but also a truly powerful strain, resulting from the cross between two resistant strains, you’ll be amazed by the quantity and quality of this great genetics which grows around 100cm and can produce up to 600gr/m2. This autoflower grows quite compact and bushy, similar to Indicas but it actually is a fine-balanced hybrid that offers the best of both worlds, you can expect really dense buds with a beautiful color mix and a thick layer of resin that makes the buds shine from afar.

Gorilla Cookies Auto
Gorilla Cookies Auto
· Whopping 28.5% THC!
· Super-reliable and incredibly resistant.
· Massive producer.
· Chunky dense buds.
· Great for beginners.
13,00 €
13,00 € / seed
Buy Gorilla Cookies Auto
Customers experience
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Gorilla Cookies Auto provides a complex mix of earthy and kushy aromas with hints of fuel and lemon that complement it beautifully and ends up tasting like a delicious sweet and gassy cookie.

The flavorful buds offer an enjoyable head high that is quite euphoric but gradually transforms into a strong corporal high that will leave you feeling like your whole face is melting and deeply relax you.

  • We recommend providing support during the flowering stage due to the huge heavy buds.
  • This strain prefers a heavy feeding starting from week 3 so make sure you feed her properly.
  • Gorilla Cookies Auto may get quite bushy so it’s highly recommended you tie down the branches to allow light and air to reach all the flowering sites equally.

Orange Sherbet Auto

Orange Sherbet Auto is a truly monstrous strain, one of our highest yielding autoflowering strain and one of the tallest out there, this autoflower produces mouth-watering citrus terpenes and can reach up to 150cm while producing around 650gr/m2.

We recommend this strain for growers with plenty of grow space because this autoflower will not only grow quickly, but it will get super tall so you will need extra space and definitely need to support the branches when it starts flowering.

Orange Sherbet Auto
Orange Sherbet Auto
· Outrageous 26% THC.
· Perfect for all growers.
· Sativa-dominant giant.
· Incredibly resilient.
· A must for extractors.
· Top-shelf terps.
13,00 €
13,00 € / seed
Buy Orange Sherbet Auto
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Thanks to its Sativa heritage, Orange Sherbet Auto allows a unique experience with a strong high that will keep you energized and motivated for hours, making it the perfect strain for social scenarios or just playing music or videogames.

The strong effect comes hand-in-hand with a sharp terpene profile that tastes just like a fresh cocktail of sour tangerine and orange juice that will leave your mouth coated with a strong smoothie flavor.

Grow tips

  • We recommend LST to open up the canopy and increase the quantity and quality even more.
  • Have your trim bin ready, this autoflower produces a lot of resin on the buds and all over the surrounding foliage.
  • Orange Sherbet Auto has a really strong terpene profile so it’s highly recommended for extractors and hash makers.

Wedding Cheesecake Auto

Wedding Cheesecake Auto is high yielding autoflower and a super resistant and high-productive strain that can yield 600gr/m2 in 10 weeks, this is an ideal strain for beginner growers and outdoor growers who suffer from shorter summers.

Wedding Cheesecake Auto
Wedding Cheesecake Auto
· Exquisite 24% THC!
· An Infallible strain for commercial growers.
· Greatly resilient.
· Rapid producer.
· Mouth-watering terps.
13,00 €
13,00 € / seed
Buy Wedding Cheesecake Auto
Customers experience
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This autoflower offers a unique flavor of a creamy cheesecake thanks to the elaborate mix of sweet, earthy, and fruity tastes, and produces large-sized buds that boast different shades of green and magenta or pinkish hues.

The delicious terpene profile Wedding Cheesecake Auto offers comes with a pleasant upbeat effect with a deeply relaxing edge that is well suited for daytime use but due to the high THC content, we recommend beginner smokers be cautious because it can be overwhelming for some.

Grow tips

  • It’s a great strain to harvest multiple times per year outdoors, due to its high resistance.
  • Flushing is a must if you want to really feel the strong and delicious terpene profile Wedding Cheesecake Auto has to offer.
  • We recommend using 12L pots to let this beauty grow to its maximum and show its full potential.

4. Top Tips On How To Get Bigger Yields

1. Training your autoflowers is the best way to ensure the buds get enough light and airflow, when you open up the canopy, all the flowering sites will get direct sunlight, especially the lower flowering sites. This will not only improve the quality and quantity of your harvest but will also allow you to control the width and height of the autos.


2. The more light your autoflower receives over their 9-10-week life cycle, the more buds they will produce. If you're growing outdoors, planting towards the end of spring, early summer will often deliver the best results outdoors. If you’re growing indoors, you should provide at least 75w per plant and experiment with trying different light cycles such as 18/6, 20/4, or 24/0 each one of them has its own pros and cons but most certainly, the light you provide to your autoflowers, the higher the yields. Here at Fastbuds, we recommend the 18/6 light schedule for almost all autoflowering strains.


How much do autoflowers yield: top tips

Maximize your yields with our top tips!

3. Plant training is a great way to really maximize your growing space and produce a crop that is uniform and easy to maintain, and it’s how to get the best yield from cannabis plants.


4. Adding support early on using bamboo canes will ensure your plants can withstand the weight of the buds and allow the plants to grow really fat buds without the risk of snapping the branches.


5. Autoflowers make it easy to maintain a perpetual harvest, by growing a fast flowering cultivar you can keep harvesting every couple of weeks in the same grow tent and under the same light cycle. 

5. In Conclusion

There are many variables that should be considered when thinking about the best autoflower yield. Hitting the numbers that the seed banks suggest takes time and is only used as a guide. Having the ideal balance of lighting, cultivar, nutrients, plant training, climate, and location all play a role and should be planned out beforehand to give you the upper hand when planting outdoors.

It's essential you provide the best conditions if you want the best yields; Things such as temperature, humidity, airflow, and nutrients can and will affect how your autoflowers perform their basic processes such as transpiration and photosynthesis among others, so it's important you have the right equipment to check and adjust these factors.

Obviously, you can grow your autoflowers without worrying too. much about it but if you're looking to make the most out of every single seed and really take your harvest to the next level, so we strongly recommend getting at least the basic tools to be able to measure and adjust the temperature and humidity. Good luck hitting those numbers and harvesting crops as often as possible, if you have tips for our fellow growers feel free to leave a comment in the comment section below!