How Much Weed Does One Plant Produce?
There are two main goals for every cannabis grower. Obviously, they need to grow quality plants. However, they also need to grow large in terms of weight. But how much weed does one plant produce? That’s something of a loaded question. In fact, there are numerous variables that can affect how much weed a grower can harvest per plant.
Cannabis Yield: What’s On The Scale?
There’s no general rule on how much any given marijuana plant can yield. The amount of weed that an indoor grower in a Colorado warehouse gets per plant will never be the same as an outdoor grower in the northern California sun. In fact, these growers can even grow the exact same strains of marijuana and see completely different results in how much weed they get per plant. Several factors can affect plant yields – and not all of them are positive. However, if you can identify these factors, it can lead to a better understanding of how they affect the total weight of a marijuana plant. Seasoned growers know how to use these variables to grow massive buds.
High Yielding Strains
Factors Impacting Yields: The Break-Down
If a grower doesn’t maintain steady control of some of the most crucial variables in growing cannabis, they’re going to have a difficult time maintaining high-yielding harvests. If your harvests don’t bear enough weight, you may actually end up losing money paying for expenses like lighting, nutrients and growing tools that you might have used incorrectly.
Growing Indoors Vs. Outdoors
One of the first questions every grower asks themselves is whether they want to grow indoors or outdoors. There are several advantages to each technique.
When a grower cultivates indoors, they can control factors like ambient temperature and humidity more easily. With control over these kinds of variables, it’s easy for an indoor grower to significantly increase the weight of their plants.
In contrast, growing outdoors allows a grower to utilize the power of the sun. This can have a significant impact on a harvest’s yield. However, outdoor grows are vulnerable to factors like changes in weather, swings in temperature, precipitation and pest infestations. These can seriously impact cannabis yield in a negative way.
The growing medium can also change how much weed one plant will produce. There are two main types of growing media: soil and hydroponic. Growing in soil is fairly self-explanatory – each plant grows in dirt. With hydroponics, the plants are set into a water-based growing medium. Each technique has its own factors to consider:
- Easier – plant take root in soil, which buffers them against possible issues.
- Lower yields compared to hydroponic setups.
- Less forgiving than growing in soil – there’s no room for errors. Susceptible to issues in temperature, pH and TDS.
- Higher yields – hydroponic grows can increase yields by up to 20%.
One of the more obvious ways to affect how much you can get from one plant is by using nutrients. There are three main macronutrients that every cannabis plant requires: nitrogen, phosphorus and potassium.
Nitrogen is one of the basic building blocks of all plants. It’s important in the early stages of a plant’s lifecycle and causes its stems to stretch. Potassium and phosphorus are both important to late-stage plants. These determine how many flowers your plant grows and their size, weight and density. Understanding how these nutrients affect a plant’s growth is essential for any cannabis grower.
Lighting is a crucial factor that can have huge implications on a plant’s weight. Factors like the wattage and type of light can make the exact same plants grow in vastly different ways.
Using different lights can affect a grow’s yield. For example, LEDs, one of the most popular types of lights, yield about 0.5 grams (.017 ounces) per watt of power. In contrast, high-pressure sodium (HPS) lights, the industry standard for professional growers, can produce about one gram per watt. Therefore, under perfect conditions, an experienced grower can expect a 1000-watt HPS light to yield about 1000 grams (35 ounces). However, if you can’t afford a huge, expensive light, don’t worry – you don’t always need a massive HPS light to get a decent yield!
Number Of Plants
When a grower is trying to maximize their yield, more plants isn’t necessarily better. That might seem counter-intuitive at first. However, growing too many plants in a tight space can result in decreased ventilation, less light penetration through the canopy and increased humidity. In turn, these issues can lead to several problems that can decrease yields. For example, higher humidity encourages the growth of harmful pests, diseases and fungi that can cripple a grow’s yield. For this reason, growing 4 plants under a 600-watt HPS light can at times yield more than 16 plants under the same light.
A plant’s strain will also have a huge effect on its overall weight. While there are countless individual cannabis strains, there are few different over-arching categories these strains all fall into. They include:
- Photoperiodic strains – these types of plants generally grow taller and yield more but require a grower to change their total daily hours of light from 18 to 12 in order to make them flower. This change mirrors the natural difference between daylight hours in summer and fall.
- Autoflowers – these strains don’t require a change in light cycle. They generally grow faster than photoperiodic strains but have lower yields. They allow for more harvests in less time.
Additionally, every strain of cannabis falls into one of two main breeds: Indica and Sativa. Generally, Indica plants grow shorter and yield less than Sativas do. Sativas usually grow to be significantly taller and produce higher yields but take more time to complete their grow cycle.
How To Increase Cannabis Yields
One of the most often overlooked variables determining how much weed a plant can yield is a garden’s ventilation, ambient temperature and humidity. First, temperature and humidity can encourage a plant to grow taller and bigger. This, in turn, will have positive effect on yield. Additionally, every individual strain of cannabis has a temperature and humidity that it prefers. If a grower can dial in their garden’s conditions to best suit the strains they’re growing, they can encourage their plants to increase their yield.
A grower’s personal skills will also play a huge part in their grow’s total yield. A skilled grower with significant experience will be able to identify problems before they threaten their garden. Several issues, like pest infestations and nutrient deficiencies, can have a negative effect on a garden’s health and yield. This is one of the most difficult factors to affect when a grower is trying to maximize their yield. The only real way for a grower to improve their skills is through time, dedication and practice.
The Most Effective Training Techniques
There are a variety of training techniques, both advanced and beginner-friendly, that can be applied to cannabis plants in order to increase the payoff and bring the total yield as close as possible to the maximum. Dedicating time to research and perform LST (Low-Stress Training) and HST (High-Stress Training) can be a grower’s most profitable investment. These methods ensure reshaping the canopy of the plant in order to achieve an even distribution of light and multiplied bud production. Several other techniques like ScrOG, SoG and defoliation can also have a hugely positive impact on a garden’s total output.
This chart compares information reported by several growers using different environments and techniques to grow the same strains. Note how different variables can affect yields.
Wet And Dry Weed. What’s The Deal?
Even after you cut down your cannabis plants, you can still affect your yield. The way a grower dries and cures their weed can be just as important as the actual growing techniques they use. When a grower dries their weed, strict climate control is required. They need to do it slowly in a room with no lights and a temperature of 18 C (64 F). If the grower has their drying and curing techniques dialed in, their dry weight will be a mere 20 to 25% of their wet weight.
Are Maximum Yields Achievable?
If a grower has their entire grow dialed in and maximized for production, they can expect their cannabis plants to produce about one gram per watt of light. To achieve this kind of precision, many growers keep a daily journal or log to measure all of the above-mentioned factors. This important task is often forgotten, but crucial in any grow. Without a journal, a grower is essentially doing guesswork, whereas a systematic approach allows the grower to achieve maximum yield, as well as being a great way to improve experience and gather long-term knowledge.
There’s no easy way to know how much bud you’ll get from one plant. All of these variables can have huge and wide-ranging effects on your plants. However, if you learn how to control factors like growing medium, nutrients, lighting, number of plants, genetics, conditions and training techniques, you can maximize your yield effectively. Moreover, by keeping a good diary and recognizing how these factors affect your total yield, you can quickly and easily learn which variables are the most important. Don’t worry – with diligent work and practice, you too can be on your way to a gram per watt in no time!How much yield can you get from one marijuana plant. Know more about factors that can affect how much weed a grower can harvest per plant
How Much Can One Plant Produce?
I’ve seen an outdoor plants produce as little as 1/2 oz up to a pound. There are too many factors to give you the answer you’re looking for. A decent grow could give you a few ounces per plant.
How much will I yield?
“I have XXX watts. how much will I yield?” or “How can I get bigger yields?”
A common inquiry. From ambitious new gardeners and for good reason too. But, this is really a loaded question that doesn’t have a definite answer. It seems one of the first assumptions by new gardeners is that loads of light automatically equals loads of buds. Unfortunately, it’s just not that simple. Yield is equally contingent on a number of factors; light, temperature, humidity, water, nutrients, CO2/ventilation, genetics, etc. Think of it as an engine, with each factor of cultivation representing a single piston, sure the engine will run if some of the cylinders are misfiring or not firing at all, but to yield the most power from that engine, all cylinders must be firing in sync and at maximum capacity.
Temperature. Most cannabis plants will slow or cease growth when temp’s get above 85F, or below 65f. Optimal lights-on temp for most strains is about 72-78F, with 5-10 degrees cooler during the dark period being a good rule of thumb.
Humidity. Cannabis does best around 45%-55% RH (relative humidity).
During veg and late flower, however letting it drop lower during the final two weeks of flower is advised, as it will help prevent mould problems.
Water/moisture. Cannabis generally doesn’t like “wet feet”, or a soggy environment, so it’s very important to have a fast draining soil/soil-less mix (or well aerated solution in a hydro garden). Wet or damp conditions can also lead to mould problems during flowering.
Nutrients. Cannabis will require a variety of nutrients at varying NPK ratios during its existence. NPK stand for; nitrogen (N), phosphorus (P), and potassium (K)-the three major nutrients used by plants. Simply put, your plants will need a fertilizer with more N than P and K during vegetative growth and fertilizer with more P than N and K during flowering. Using any well-known quality fertilizer applied per instruction @ ½ strength is a good place to start. Organic, chemical, or somewhere in-between is another choice to be made and is a totally personal one. There is a plethora of fertilizers on the market, but the best fertilizer is the one that’s used properly.
CO2/ventilation. Plants require CO2. There is sufficient CO2 in our atmosphere to support massive bud growth, but when growing inside you must either have adequate ventilation (the volume of the room exhausted at least once/5 minutes) to ensure that there is a constant supply of fresh, CO2 enriched air or one must have supplemental CO2, which requires higher temp’s and more nutrients to be utilized effectively.
Light. Typically, the more the merrier, but more light will create stronger water, nutrient, and CO2 demands on the plants. You must also have the proper spectrum of lighting as well as a means of efficiently reflecting as much of the light as possible into the garden’s canopy. The norm is to use more bluish light (Metal Halide, cool-white fluorescents) for vegetative growth and more reddish (High Pressure sodium, warm fluoro’s) light for flowering. Though it’s possible to grow great buds under fluorescent lighting and a few will even argue their superiority to HID’s, most indoor growers use High Intensity Discharge lights such as MH and HPS, and many use fluoro’s for vegetative growth and HPS for flowering. It’s very important to have the light as physically close to the canopy as possible without burning the foliage and still allowing for even coverage.Many new growers believe that “Droppin the light” closer to the plant will be beneficial. Besides heat stress, the bulb puts out radiant energy that causes leaf burn (Note it is possible to complete a grow using just HPS or MH)
Genetics. Its an easily overlooked factor. Some strains simply have the potential to yield more than others. Having a heavy-yielding strain doesn’t automatically equal big yields, either. It only means that the potential for heavy yields is there. The grower must provide the optimum environment for that particular strain in order for it to be able to reach it’s yield potential, and each strain has slightly unique requirements. Also, within a strain there are usually several phenotypes, each of which will exhibit unique characteristics which is to say that some pheno’s of a particular strain will weigh more than others.
Plant/root/container size. Obviously, the longer a plant is veg’d, the bigger it will get and the more it will yield. Almost always overlooked because they’re unseen are the roots. Root mass is directly related to bud production. Simply put, the more roots you have the more bud you will (potentially) have. Be sure to always allow plenty of space for the roots to grow and spread out, even more-so in soil A general rule of thumb is 1 gallon of soil for every foot of plant height.
These systems have a higher g/w/time yield than comparable large plant system over the same time period.
Grower’s skill. Growers can add yield by: using additives (like B1, kelp, enzymes), foliar feeding, and topping/FIM/
In addition. Tricks like keeping nutrients and the air temps warm during night cycle can help final yield. Although it’s a topic of hot debate, it’s generally thought that any system that supplies the roots with maximum oxygen (aeroponics) would outperform a system that restricts 02 input such as (soil).
So, as you can see there’s much more to yield than throwing some plants under tons of light with tons of nutes. Before one becomes too concerned with yield, one must first learn how to grow plants well, learn how to “listen” to the plants and give them just what they need. It’s best to start with simpler methods, in fact, I think the simpler method is always the better one. Learn how to grow strong, healthy, fast-growing plants and the yields will come.