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how much does 1 marijuana seed produce

How Much Weed Can One Marijuana Plant Yield? – Bonza Blog

We all want to get the biggest yield out of our marijuana crop especially since growing it requires hard work. But more importantly, we want to be able to enjoy its benefits as much as we can. To help us achieve this goal, we need to have a baseline on how much weed to expect come harvest time. Ultimately, this information will help guide our work to get the most out of the crop.

So, exactly how much weed can one marijuana plant make? Interestingly, there are many answers to this question. But the biggest determinant is the light that nourishes the cannabis plants. Typically, a brighter light will encourage the plant to produce bigger and denser buds. Similarly, a spacious grow area will help the roots grow longer which results to a more productive crop.

Not surprisingly, using high-quality soil and fertilizer will also lead to bigger yields. As we can see, many variables can affect both the quantity and quality of the weed we can harvest. Therefore, we will focus on them to get the nearest estimate of the yield.

So, this article will cover the many ways to gauge the yield of marijuana based on the environment that we provide. Moreover, we will look at the basic considerations before planting to get most of the crop. Finally, we will learn how to make one cannabis plant produce as much as possible every harvest time.

How to Estimate Marijuana Yield Base on the Environment

The easiest way to predict the yield of a marijuana plant is to pay close attention to its surroundings. Hence, this section will present the many methods of estimating the average expected harvest based on the grow situations.

  • Indoor Yield

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An indoor cannabis garden has significantly different variables from an outdoor one. Add to that, the variety of grow mediums to choose from have different rates of absorbing nutrients and oxygen. But mainly, the types of light we use directly influence the speed at which the plants flower. All in all, these factors play huge roles in the final yield.

  • Grow Light and Space

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Generally, an expert indoor grower can produce 1 gram of buds per watt of an HPS light. So, a 400 watt has the potential to turn out 400 grams or 14 ounces of dried marijuana. For best results, we should utilize certain light wattage for a specific grow area. To get a clearer picture, the following information shows how much buds we can get in varying specifications.

  • Expected Yield in Imperial Measurements

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A 3.5 x 1.5 x 6.5-foot grow cabinet and a 200-watt CFL lamp will give 1.5 to 2.0 ounces of weed or 3.5 oz for advanced growers.

Using the same grow space but with a 250-watt HPS, expect to get 3.0 to 5.0 ounces or 9.0 oz for advanced growers.

On the other hand, a 3.5 x 3.5 x 7-foot space and a 400-watt HPS will provide 4.5 to 9.0 ounces of weed. But for advanced growers, the yield is 14 ounces.

When the grow room is 4 x 4 x 8 feet with a 600-watt HPS lamp, expect to get 5.0 to 10 ounces of weed. Advanced growers can easily get 21 ounces.

Finally, in a 5 x 5 x 8-feet grow space with 1000-watt HPS, the yield goes up to 9.0 to 18 ounces and 36 for advanced growers.

  • Expected Yield in Metric Measurements

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A grow cabinet size of 1 x 0.5 x 2 meters with 200-watt CFL lamp will make 40 to 60 grams of weed. Seasoned growers can get as much as 100 grams.
However, if we use a 250-watt HPS light, the yield goes up to 80 to 150 grams and 250 for the experts.
A bigger grow room such as 1 x 1 x 2.5 meters and 400-watt HPS will provide 100 to 250 grams of weed. The same specifications will get advanced growers 400 grams.
Increasing the space to 1.2 x 1.2 x 2.5 meters and light to 600-watt HPS will get us around 150 to 300 grams or 600 for advanced growers.
Finally, a grow room that measures 1.5 x 1.5 x 2.5 meters and a 1000-watt HPS lamp will yield 250 to 500 grams of usable weed. Expert growers will get around 1000 grams.

  • Grow Medium
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Depending on personal preferences and availability of resources, we can select which grow medium works best for us. Since no two mediums are alike, anticipate getting less or more yield.

  • Hydroponics

If we want the plants to grow fast and produce denser buds, hydroponics is the way to go. In fact, on average, we can get 20% more weed using this medium than soil. However, disastrous outcomes are more frequent in hydroponics. Since the roots come in direct contact with the nutrient solutions, then a minor mistake can have devastating results.

But if we do things properly, then we can get 1.2 grams of weed per watt of light. This means that 600-watt of HPS lamp can give 720 grams or about 25 ounces. So, make sure to develop the skills of checking and correcting the pH and TDS values when deciding to go with this one.

  • Soil

Soil – Image powered by

Expect to get lesser yield in soil since it acts as a buffer to the nutrients, making the absorption rate much slower. The maximum yield is 1 gram per watt, which means that 600 watts of HPS lamp will produce 600 grams or 21 ounces of weed.

The upside is that there’s a lot of wiggle room in using soil. As such, big mistakes in nutrient feeding and watering are easy to correct. Because of its flexibility, newbie growers usually find more success in this medium.

  • Outdoor Yield

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Under perfect conditions, an outdoor marijuana plant can make up to 500 grams or 17.5 oz of weed. As mentioned, ample space is vital for the plants to flourish. This means that each plant must have at least 2 meters or 50 liters of soil in a container.

How to Optimize Marijuana Yield

Now that we know how much weed to expect in one plant, let’s learn how to boost the yield.

  • Plan the Basics

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In growing weed, setting plans on how to tackle the process increases our chances of success. This begins with choosing the seeds that have the best genes. Obviously, a high-quality seed will grow better, faster, and produce more than inferior ones.

Another essential part of planning is deciding how many plants to grow. A good guideline is to consider what happens when we grow only 4 plants. If one gets sick and die, we will then have 25% less yield. Also, this number tend to take longer to enter the flowering phase since their leaves don’t touch as fast when there are more plants.

On the bright side, 4 plants are easier to manage compared to 16 plants. In addition, it’s easier to hide 4 cannabis plants than 16.

  • Maximize Space and Grow Area

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The photo above is one marijuana plant under a 600-watt light. To get this kind of productivity, use at least a 4 x 4 foot grow tent and a 600-watt HPS light. Under perfect conditions, we can get over a pound of weed per one plant when we focus the light on it.

While getting this kind of yield seems exciting, it takes a lot of pruning and longer vegetative time. Also, in the unfortunate moment that it gets sick, we will be left with no replacement.

  • Use Screen of Green Method

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An excellent way to increase the yield up to 10-20% is to utilize the SCROG technique. However, we will need to master the basic grow skills such as watering and pruning to get this right.
To apply it, place a screen 15 inches above the plants and tie the branches once they grow 4 inches through the screen. The idea is to spread the branches so that all leaves will get the same amount of light, resulting to a more rapid and productive growth.

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Environmental Factors Dictate How Much a Marijuana Plant Yields

Basically, how much weed a marijuana plant makes depends on several variables.
This includes light, water, nutrition, air, and space to spread its roots and leaves. Of course, we can expect a bountiful yield when we provide all the requirements. As such, the key is to make sure that the plants get the optimum level of care.

As we know, being well-informed always bear satisfying outcomes. So, know the facts and have a more productive crop by using this article as a guideline. Having an idea on how much yield to expect points us to the right direction. So, get a clearer vision of the results and pair it with hard work to get the best harvest possible.

How Much Weed Does One Plant Produce?

So, you are starting to grow some of your own weed at home, and yeah, it’s a lot of fun and super rewarding as well. However, you something you might be wondering is, how much weed does one plant produce?

In general, you can expect anywhere from 28 to 1,000 grams of pot yielded per weed plant.

The reason why there is such a discrepancy in that number above is because there are plenty of different factors which can and to affect the overall yield, so let’s talk about each of these right now.

How Much Can One Weed Plant Yield?

When it comes to your weed plants, what is the average yield of a one cannabis plant?As we mentioned before, there are various factors which can affect this.

First, we want to talk about soil vs hydro yields, indoor vs outdoor, and auto flowering vs photoperiod weed plant yields.

Soil vs Hydroponic Weed Yields

If you grow weed indoors the hydroponic pay, you can really control the amount of nutrients they get, and controlling the lighting is not too difficult either.

Generally speaking, you will get a much higher yield from a hydroponic grow than a soil grow.

With a hydroponic grow op, from a single plant (with a 600 watt HPS grow light), you can expect a yield of about 720 grams or 25 ounces.

If you use the same nutrients and lights, but are growing indoors in soil, you can expect to yield roughly 600 grams or 21 ounces of bud from a single weed plant.

Indoor vs Outdoor Growing

Something else to keep in mind here is that indoor grown weed plants are going to produce higher yields than outdoor grown weed plants.

As mentioned above, depending on whether you grow using soil or hydroponically, you can get anywhere from 600 to 720 grams of weed per pot plant.

However, when grown outdoors, the yields are usually a bit lower, which is because you cannot control the environment all that well.

When it comes to growing outdoors, you can expect a single marijuana plant to yield up to 500 grams of bud, if everything goes as planned, although this could also be a lot less.

Photoperiod vs Auto Flowering Plant Yields

The other big comparison to keep in mind is that there are different types of weed plants out there. There are two main kinds in this regard, photoperiod and auto flowering.

Photoperiod weed plants are normal ones which you have to switch the light schedule to make them flower, and yes, these can produce the same amounts which we have described above.

On the other hand, you have your auto flowering weed plants, which will begin flowering on their own, they take much less time to grow to maturity, but they also produce much less weed.

You can expect an average indoor auto flowering weed plant to produce a maximum of 120 grams of bud per plants, or a little over 4 ounces.

That said, this type of weed plant is much easier to deal with and they grow a heck of a lot faster too.

6 Factors Which Affect Marijuana Plant Yields

Alright, so we have discussed the differences between growing weed in soil vs hydroponically, indoor vs outdoor, and auto flowering vs photoperiod weed plants too, but are there also other factors which can affect the yield you will get from a weed plant?

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Yes, some of these other factors include the type, quality, and amount of light your plants get, the soil and/or nutrients you use, pests and disease, ventilation, and more.

Let’s take a quick look at each factor which may affect your overall yield per plant.

1. Lighting

One of the biggest factors which is going to affect how much a single pot plant yields when all is said and one, is the quality and amount of light your plants get.

Generally speaking, a skilled grower should be able to yield about 1 gram of weed per watt of light produced to each plant.

So, an indoor plant with a 600 watt HPS grow light should produce roughly 600 grams, if all else goes well of course.

HPS and metal halide grow lights (we have compared them here, if you are interested) tend to produce the higher yields, and while LED grow lights are fine, the yields which they produce are not spectacular.

You need the right kind and the right strength of lights to get the highest yields possible.

2. Soil & Nutrients

Another factor which will affect just how much weed you get from a single plant is what kind of soil (if you are using soil), and what kind of nutrients, and the amount of nutrients you are providing your plants with.

Keep in mind that there are the NPK nutrients to think about here, the 3 main nutrients which weed plants need to produce the best yields possible.

Be sure to provide them with the right nutrients, the right amounts of each, and at the right times too. Either too many or too few nutrients can drastically reduce final yields.

If you need help with picking the right soil then see our helpful guide here.

3. Temperature & Humidity

Temperature and humidity may be two separate factors per say, but they are related to a certain degree.

Either way, the temperature and humidity of the surrounding area, whether indoor or out, will affect your overall yield.

Be sure to always maintain the proper temperature and humidity levels whenever possible, both for the vegetation and flowering phases of pot growth.

If the air around the pot plants is too humid or dry, or too hot or cold, you will reduce the yields you get,

4. Pests & Disease

Of course, pests and diseases, which do occur more often than one would like, are also going to play a big difference here.

If you notice any kind of pests or diseases affecting your weed plants, you need to take care of them as soon as humanly possible, or else you will put your weed plants in jeopardy.

5. Watering

Moreover, the next factor which can greatly affect the overall yield of a single weed plant is how much water you provide them with.

Either too little or too much water can make quite the difference here. Get some tools to ensure that the soil is always at the proper wetness, and make sure to develop a solid watering schedule too.

6. Sativa vs Indica

The final thing to keep in mind here is that sativa weed plants tend to produce just a little bit less weed than indica plants.

The difference may be negligible here, but there is one nonetheless. An indica plant may produce a few percent more final buds on average than a sativa plant, and they tend to be denser and heavier too.


There you have it folks, everything you need to know about how much weed your marijuana plants are going to yield.

We would recommend growing hydroponically indoors, use a photoperiod strain, make sure it is an indica, and provide your plants with the right nutrients and type of lighting for the very best results and the highest yields.


My passion for the sticky icky started nearly a decade ago, and it all began when I first laid my eyes on the beauty that is the marijuana plant.

I cover all aspects of growing from equipment recommendations to plant health/care tips to help both new and experienced growers.