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How Much Weed Can One Marijuana Plant Yield? 2021 Update

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ledgrowlight

Many people are interested in growing cannabis plants for different purposes. For some, it is for medical use, while for others, it’s recreational. There may even be some that grow marijuana simply because it is fun to grow.

Regardless of why you are growing, you are likely to wonder and ask the question, “How much marijuana does one plant produce?”, and it is not a crazy question to ask. It’s simply good planning to know what to expect to harvest from each plant. That way, you can decide whether the reward will be worth the effort. Maybe it makes more sense to stick to dispensaries.

How Much Does One Weed Plant Produce?

If you are growing cannabis outdoors, where cannabis plants can grow as large as they like, you can expect 500 grams (17.5 ounces) per plant. This assumes ideal conditions.

Growing indoors, things get a little more complicated. The size of the plant is restricted by the size of the grow room, but you choose how large you let it get. For a very rough estimate, you can figure on about an ounce per foot of height.

Single large weed plant
Because plant size is so variable, it is not the best way to estimate yield. A much better method is to use the strength of your light. Using the size of your grow area works as well.

Using The Amount Of Light To Estimate Yield
You can put one large marijuana plant or 20 tiny ones underneath the same light and you will end up with approximately the same yield. However, the yield per plant is obviously vastly different. That is why lighting is a better predictor for yield than the number of plants.

If you provide good growing conditions and you don’t make any big mistakes, you can expect a yield of about 1 gram per watt of light (0.035 oz/w). Thus, you can expect a yield of around 1000 g, or 1 kg, from a 1000 watt light.

If you grow 20 smaller plants under that light, your yield per plant will be 50 grams (1.76 oz). But if you grow four larger plants, each one will yield 250 g (8.82 oz).

The grow area and the amount of light are the same, as is the expected yield. But the yield per plant is vastly different. That is why it is meaningless to ask how much weed one plant yields.

Note that the wattage we are using here is for HID grow lights. It would work for fluorescent as well. But LED grow lights are different.

HID grow light producing large yield
LED lights have an actual wattage and a second number that is sometimes the HID equivalent, but often much higher than that. The second number is what the manufacturers usually use in the name, but it does not generally tell you much about the actual power of the light.

For that reason, you’ll want to use the actual wattage. But it does not work for the above calculation, so you have to use it to approximate the HID equivalent wattage.

What is the Maximum indoor yield?
Growing marijuana indoors is often necessary, but the key to success is simulating an outdoor growing environment. For example, lights are very important. Ever tried to smoke a joint without a lighter? That’s what it’s like for an indoor plant without light. If you get good at growing, you can expect to see your plants produce about a gram of weed for every watt of light (1 gram = 0,035 oz).

To put that in perspective, a skilled grower can use a 400 watts HPS grow light to produce 400 grams of pot. That works out to about 14 oz. Want more? Get more light. A grow room with 1200 watts can lead to a yield of 42 oz.

Get the right light but don’t forget you’ll also need the right nutrients, the right equipment, good air quality, a good room for the plants to grow in, and plenty of time for the attention you’ll need to give it if you want the highest possible yield. Making sure your plants have enough space is key.

The yield from an indoor-grown cannabis plant largely depends on how much light the plant is receiving. When using artificial lighting, for example, an experienced grower can expect to harvest a gram of weed from each watt of HPS light provided to the plant. This means that if the light is a 400-watt HPS bulb, then 400 grams of weed could potentially be harvested. However, this isn’t the only variable at play; other factors could lower the yield even though you had plenty of light.

Light is arguably one of the most important factors affecting your yield. To maximise output, you should maximise light exposure to your plant early on by using training techniques to manipulate growth. So, in this article, we will recommend some good grow lights for indoor plants.

 

 

1000-watt HPS grow light

The powerhouse 1000 watt double ended Yield Lab lamp is run off an electronic ballast with an adjustable wattage range, enabling growers to change from 600 watts to 750, 1000 or even up 1000 watts! This customization means that the ballast is compatible with a wide range of double ended grow lamps. This light fixture has also been designed so that the bulb and the ballast are situated close to each other, minimizing the electromagnetic and radio frequency interference which can occur with other grow light fixtures.

Double ended grow light kits have been in use by professional horticulturists for over a decade, but it is only recently that the technology has been employed for use in smaller setups. This has resulted in a range of double ended grow light kits that are perfect for private indoor growers. Double ended light fixtures are more stable than the traditional single ended bulb which means they are able to produce a greater level of PAR light output. The double ended light fixtures also benefit from a lifespan that is typically longer and with a slower rate of degradation. Standard single ended lamps will generally reduce their lumen output down to 85–90% after just 4,000 hours of use; in contrast, double ended light fixtures maintain a lumen output of 90% after an impressive 10,000 hours of use.

Double ended light fixtures also produce higher quantities of both UV and IR light than single ended HPS bulbs, which in turn can result in plants producing a higher concentration of essential oils (thereby increasing the potency of the plant). Since the Yield Lab double ended light fixture runs in a closed and solid state it also benefits from improved heat management and no acoustic resonance.

One of the most advanced and high powered grow light fixtures currently available.
Lamp runs off the electronic ballast with adjustable wattage range.
Bulb and the ballast are situated close to each other, minimizing the EMI and RF interference.
Growers benefit from a lifespan that is typically longer and with a slower rate of degradation.
Improved heat management and no acoustic resonance.

 

 

ECO Farm ECOR Samsung LM301H 240W Dimmable Quantum Board with Meanwell Driver


Full Spectrum Light: The full spectrum light provides overall nourishment and promotes photosynthesis.

Diffused Light: Diffused light allows deeper canopy penetration, and dispersed light avoids the concentration of light at one spot; thus, plants do not get damaged due to heat.

Dimmable Power Supply: You can adjust the light settings according to the stage of the plant’s life cycle.

Samsung LM301H 3500K diodes: The LM301H has a higher photon efficiency and allows deeper canopy penetration for healthier plant growth.

Efficiency with 2.8umol/J, make you get 30% higher yield compare OLD blurple led lights. Max 2.2g yield per wattage (power draw), achieve maximum quality and quantity, much better than traditional HPS grow systems

240W Veg footprint is 3x5ft, Bloom footprint is 2x4 ft; 480W Veg footprint is 5x5ft, Bloom footprint is 4x4ft., and the total output has been reported at 1584 PPF. Ideally, the fixture must be mounted 12–18 inches away from the canopy.

The fixture has been designed for grow areas with a low ceiling height and vertical racks. The light allow even light spread. So, even the ones at the corner get sufficient lighting and nourishment.

No Fan Noise Free

 

 

Spider Farmer SF-2000 LED Quantum Board with Samsung Chips LM301B & Dimmable MeanWell Driver

Max Yield:2.5g/watt

LOWER RUNNING COSTS & HIGHER-QUALITY YIELDS: SPIDER FARMER LED Grow Lights utilize the latest in high yielding LEDs technology today-Samsung LM301B diodes, high Energy Efficiency, delivers powerful light output and uniform canopy penetration to resulting maximum higher yields. Veg Coverage is 6 x 6ft, Flowering Coverage is 5 x 5 ft.

Multi-light Connection with unified dimming especially beneficial for large area of indoor growing and commercial planting.

IDEAL FOR ALL GROWTH STAGES: Excellent full spectrum- white, blue, red and IR (3000K, 5000K, 660nm and IR 760nm). 3000K diodes providing more reddish light and the 5000K providing more blueish. The 660nm red and IR light is especially useful during bloom, where it speeds up flowering time and boost yields. Turn your seeds into your own supply. And the light looks fairly natural , so it’s good for accurately monitoring plant health.

WELL MADE & SOLID CONSTRUCTION: No Fan Noise Free. High Safety performance MEAN WELL Driver, Fair Waterproofing. Update aluminum board is thick and sturdy, doesn’t put out a tremendous amount of heat, high-quality protective covers for cables; User-Friendly Packaging. Quality components mean the light lasts longer, but they also save you money.

 

Conclusion

The yield you can expect from a single weed bush varies greatly. It depends on a number of factors, but the primary one is the size of the bush.

For that reason, it is much better to use the power of your lighting, or the size of your grow area, to estimate yield. Then you can fill that area with one large marijuana plant, several smaller ones, or many tiny ones.

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