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how much marijuana does one plant produce

How much weed does one plant yield

The question most asked by beginner growers is how many grams of cannabis per plant can be harvested? A great question, yet hard to answer in a simple way, but certainly not impossible.

All plants depend on light, nutrients and water to achieve their optimal growth and potential in terms of harvest. Cannabis plants can be grown indoors or outdoors using many different horticultural methods, which all have an impact on growth, not even taking into consideration the natural variations in yield between strains.

To answer the question “how much weed does one plant yield“, we will look at weed plants grown indoors under different light conditions to give you an understanding of how much weed an average weed plant can produce.

Factors that determine the harvest of a strain

Many factors influence the weed production of a cannabis plant. The most important ones are listed below:

  • The type of culture: indoors or outdoors
  • Lighting power
  • Available space to the plant
  • Growth time
  • Temperature and humidity
  • Type of seeds
  • Fertilisers used to feed the plant
  • The culture technique used: one-bud, scrog, trellising, etc.

Indoor cultivation

The number of plants doesn’t really count. It doesn’t matter how many plants per square metre you grow. The goal is for the entire available surface to be covered by plants, which will allow the flowers to occupy all of the available space and thus maximise the production of weed.

The number of plants per square metre will, however, have a significant influence on the growth time required.

You could decide to make 1 m2 of one-bud. In which case, you would need between 15 and 50 plants to cover one square metre, and in this scenario, the growth phase will last less than a week. Indeed, you can put your plants in the flowering period as soon as the first leaves appear. Or you could decide only to grow one plant in one square metre. For this, and if you want your plant to occupy all the available space, it will take a growth period of two to three months. However, it is advisable to choose a compromise between these two extremes.

For beginners, six plants per square metre allow a relatively short growth phase of 4 or 5 weeks. This also avoids having to manage 10 or 15 plants in a first session.

Here are some different scenarios to give you an idea of what you can hope to harvest.

Scenario 1 – Beginner using 600-watts

A beginner cultivator using a 600-watt HPS lamp in a 1 m2 box. Average quality equipment and basic fertilisers.

Let’s also imagine that this cultivator takes care of his plants carefully throughout the growing period.

Finally, let’s also suppose that this grower encountered some problems of too high temperatures or too low humidity.

This cultivator can expect a harvest of 200 to 350 grams per square metre.

Scenario 2 – Experienced cultivator using 600-watts

Imagine an experienced cultivator who knows some cultivation techniques such as trellising or scrog.

Under the same conditions as the first scenario. 600-watts in 1 m2, medium equipment, basic fertilisers. Everything goes well during cultivation, and the plants receive the care they need.

This cultivator can harvest between 300 and 500 grams per square metre.

Scenario 3 – Beginner cultivator in 40-watts

A beginner cultivator using a 400-watt lamp. High-end equipment with a lot of cutting-edge optimisations and advanced but poorly mastered cultivation techniques.

In such a scenario, it is quite likely that the grower will make beginner mistakes. And these errors will cost much more than the potential gains that these optimisations could have delivered.

The harvest could also be limited to 50 or 100 grams of dry grass per square metre if something goes wrong during the cultivation.

On the contrary, if all goes well, the grower can expect between 200 and 300 grams per square metre. But it will be necessary to avoid embarking on optimisations or advanced techniques.

Scenario 4 – An experienced cultivator using 1000-watts

Finally, imagine a very experienced cultivator with a 1000-watt lamp and a growing area of 1.5 to 2 square metres. Top-quality material, ideal climatic conditions and culture which goes as well as possible without any problem. The grower will use advanced cultivation techniques such as CO2 enrichment, hydroponics and automated climate management.

This last cultivator could reach a record harvest of more than 650 grams per square metre.

How many grams of cannabis per plant can you harvest?

As promised at the beginning of the article, here are some crop estimates per plant, based on different growing conditions.

These estimates are presented in the form of scenarios, as in the previous section

Scenario 1: 400-watts and 15 days of growth

Imagine a plant grown indoors with a 400-watt lamp and a growth phase of only 15 days. The cultivation space is 1 square metre, and the plants occupy all the available space during the flowering stage.

A short growing period shortens the total growing time. For a variety that flowers in 50 days, a growth of 15 days will allow harvesting in just 65 days or just over two months. The downside is that you will need many plants to fill a space of one square metre!

In this configuration, if the grower takes care of the plants properly and there are no major incidents during cultivation, a cannabis plant can produce between 15 and 30 grams of cannabis per plant.

Scenario 2: 400-watts and 40 days of growth

Let’s take an indoor plant again with a 400-watt lamp but now with a 40-day growth phase.

During these 40 days of growth, the plant will have had time to develop a very dense root and leaf network, especially if the weather conditions are good. Some varieties will quickly reach a metre in height in 40 days of growth.

The production of buds from a single plant will, therefore, be much higher than the previous scenario. You can expect between 40 and 80 grams of cannabis per plant if flowering takes place under optimal conditions.

Scenario 3: 600-watts and 30 days of growth indoors

Growing a plant with a 600-watt HPS lamp with a 30 day growing period

The 600 watts will simply give you explosive growth. Indeed, you can virtually see your plant growth with the naked eye between morning and evening.

You will have the opportunity to train your plant to give it the shape you want and to maximise the occupancy of the space. With this method, yields can reach up to 100 – 120 grams per plant.

Choose the right seeds and your growing method

There are enormous variations in terms of potential harvest per plant ranging from 500 grams and 3 pounds.

This is a complex topic and there are many other factors that can affect yields, such as hydroponics, which minimises the likelihood of errors and the type of seed used, which also has an impact on the amount of harvest. Some strains are much more high-yielding than others. Big Bud and Girl Scout Cookies, for example, are famous for their huge buds and generous yields.

Reading tip: check all our high yielding strain seeds

The average yield over a cannabis strain depends on various factors. But how much weed does one plant yield? Check it out!

How much cannabis does one plant produce?

This is a sort of loaded question that is difficult to answer without knowing all of the influences that one plant might be exposed to. It’s nearly impossible to guess, even for the most experienced personal cultivators. However, it makes sense that you’d want to know, after all, it might not be worth the investment in the long run for some. Knowing would allow for some precise planning for growers who want to cover their habit for the whole year. So it’s a relatively helpful tidbit of information to have if you can get your hands on it.

How much cannabis does one plant produce?

One grower might boast about their ability to grow one plant that will produce close to a pound of weed, but the next may have trouble getting a meager 30 grams from the very same plant. There is no exact amount of flower that you should expect to get from a single cannabis plant, and that is especially true if you don’t have the prior experience or knowledge to boost yields because there are far too many variables to consider like:

Strain genetics – The strain of cannabis plants you chose will have a lot to do with how they grow and ultimately, how large of a yield you get. Sativa strains tend to produce smaller buds, and in turn, more modest yields. Whereas, Indicas are generally shorter bushy plants with the capability of producing large amounts of bud from one plant.

Growing medium – The growing medium that you chose will have a significant impact on how much flower a cannabis plant will produce. We know that hydroponics can add approximately 20% more to a yield of cannabis because it makes the nutrients more accessible, and it’s much easier for the plant to establish a healthy root system that can support larger, denser buds.

Humidity – A cannabis plant will flourish in a humid environment, the recommended average for growers is between 45% and 55%, but each strain will prefer a slightly different humidity level. With some on the higher end of the scale and others preferring to be drier, you’ll need to adjust this according to the specific strain that you chose to get the most from one plant.

Light – Cannabis plants require a sufficient amount of light to thrive because they harvest nutrients from it. Which, are eventually turned into new growth. An indoor cannabis plant will need a light, and the watts of the bulb should be close to the amount that you hope to harvest from one plant. So, if you want 400 grams of cannabis, then you’ll need at the bare minimum, a 400-watt bulb.

Water – Cannabis plants do love a higher level of humidity, but when it comes to water or moisture, they aren’t suited for an overly wet environment. Too much or too little water could result in a serious reduction in the amount of cannabis that you harvest at the end of the season. So it’s important to get the amount of water just right if you want to yield the most out of a plant.

Trimming techniques – Professional trimming and training techniques can take years to learn and perfect, so they are often overlooked by small-time growers. However, they can significantly increase the number of buds that you end up with when it’s time to harvest. The SCROG method is one of the most common for increasing yield size, but using it comes with some risk that may not be worth it for beginners.

Indoor vs. outdoor – Most people assume that growing a cannabis plant indoors would produce the biggest yield, but if the growing medium is soil, that’s not true. Outdoor cannabis plants in general can provide up to 500 grams more cannabis on average than their indoor counterparts.

Number of plants – Growing fewer cannabis plants together will typically result in a higher yield than bunching more than four together for a few different reasons. The first is that there’s usually more room for them to grow and stretch out, the second comes from the additional size, which can make it so that each plant can support larger and heavier buds, and the third is due to a longer period of flowering, as the extra time allows for the production of larger nugs.

Nutrients – Nutrients are a tricky addition to a cannabis garden, as too much can wreak havoc, resulting in a lower than average yield. But if you’re able to hit the sweet spot, giving your cannabis plant exactly what it needs throughout each phase of life, you’ll end up with a lot more flower once it’s time to harvest. Because fuel is necessary for the healthy growth of every living thing.

Ventilation – A cannabis plant needs a fair amount of CO2 to do well, though this is plentiful in the environment all around us, a lack of airflow in a grow room or greenhouse can lead to a shortage of it. Proper ventilation also helps to deter common pests and diseases from taking hold, while helping the grower maintain control over the temperature. Effecting the yield that you get from each cannabis plant.

Sometimes it’s all a matter of luck and skill

It sure is incredible to hear success stories from highly experienced growers who manage to pull whole pounds of cannabis from one plant, but for most this is not a realistic expectation to reach. Even once you’ve perfected what seems like every little thing, much of what you get will come down to what you know and luck. A good average to aim for from one cannabis plant is enough to cover the cost and time spent growing it. Because if you expect any more than that, you’re libel to end up disappointed.

How to produce bigger buds 10 different ways

For years growers have been searching for the most effective bud swelling techniques that can improve their chances of gaining the highest yield possible. .

This is a sort of loaded question that is difficult to answer without knowing all of the influences that one plant might be exposed to.