Flowering at 12 Inches Yield – How Much Weed Do You Get From a Plant If It Stops Growing at 12″

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Growing marijuana is definitely a process that involves quite a bit of research and patience. While you might have a good idea of what to do to raise your cannabis, you might not know what to expect in terms of yield.

You might, for example, have significant questions to expect from plants that stop growing at certain lengths. As such, it does make sense to ask yourself what kind of yield you’ll get from a plant if it stops growing at twelve inches.

How many grams of weed can you get from an individual plant?

This is the question on every grower’s mind, and there are a lot of factors at play here that will determine the answer. The size of the plant matters, of course, but what you really need to look at is genetics.

In truth, it’s the genetic and environmental factors that are going to play the biggest roles in determining what kind of yield you are going to get from your plants. As such, taking a closer look at some of these factors should yield a more useful answer.

Autoflowering or Photoperiodic

If you are a cannabis grower, you’ve probably been party to one of the many debates about whether you should be looking at an auto-flowering strain or one that is photoperiodic. Many new growers tend to be ushered over to the auto-flowering plants because they require much less effort to grow.

Marijuana plant

It’s not that these are ‘simple’ plants by any stretch of the imagination, but rather that you have to care an awful lot less about the kind of light and dark periods necessary for a photoperiodic plant to grow.

The reason this matters for yield, though, is that photoperiodic plants are capable of yielding significantly more than their auto-flowering cousins. It’s a good idea to look and see what you have growing to figure out what kind of yield at which you should be looking.

Indica vs. Sativa

Next up is looking at whether you are growing indica or sativa. Both indica and sativa have their adherents as well as their own very unique selling points, and it’s hard to say that either one is a bad choice depending on why you’re growing cannabis and what kind of effect you are expecting from the end product.

What you should be aware of, though, is that there is usually a difference in the yield that you’ll get from each strain. If you’re looking for a maximum yield, you have to go with sativa.

It usually produces anywhere from three ounces to a full pound per plant.

Indoors vs. Outdoors

While genetics does play a very big role in the kind of yield that you should expect from your plant, so too does the environment in which you grow that plant. Assuming you’re looking at a photoperiodic sativa, you’re going to maximize your yield by choosing the right place in which in can be grown.

Cannabis plant in the garden,Cannabis is a genus of flowering plants in the family Cannabaceae.

This one is actually going to come down to the type of equipment that you use. If you plant in the Spring, have plenty of exposure to sunlight, and you’ve got the space, growing outdoors is the way to go.

If you don’t have those, though, the amount of control that you can get from growing indoors may give you a better yield.

Soil and Nutrients

Finally, it’s best to remember that a healthy plant is a plant that yields more. Everything from soil acidity to the nutrients that you use in the growing process are going to be important here, so remember that the plants with the best yields are always those that get the most care.


Finally, you’re going to have to look at lighting. Above all else, lighting is what’s going to get you a higher yield level from any given plant.

That’s why the tried and true space buckets including lighting elements and why growing outside in direct sunlight can tend to give you a better yield. One of the biggest impediments to growth is the strength of your grow lights, so investing in a better lighting set-up is going to yield more.

How to Estimate Yield

Now that you know what factors will play a role in determining how much your plants will yield, you can start looking at how to estimate the yields from the plants you have. Though these numbers are going to be fudged a bit based on all of the factors above, you should be able to estimate your yields based on both pot size and lighting.

Estimating Yield Based on Pot Size

Assuming you have a standard-sized grow pot (about 18 liters), you should be able to get plants that grow to just under thirty-six inches in height. If you manage to get this kind of growth, congratulations – you should expect about one hundred grams from your plant.

Marijuana bud macro

If you’re looking at a plant that’s about twelve inches long, then, you can expect to get about thirty-three grams from each plant.

Estimating Yield Based on Lighting

Lighting is usually a little more accurate when you’re looking at estimates. Simply put, you’re going to end up with about one gram of dried bud for each watt of lighting that you’re going to use.

As such, the plants that tend to provide you with the most usable yield are almost always those that get the most light – even if the end product is only about twelve inches long.

A Note on Hydro

If you really want to break the numbers from the estimates, you’ll want to think about growing hydroponically. Hydro gives you more control over what kind of nutrients your plants get, which in turn makes the yield per watt a little higher. \If you’re looking to go big, hydro is a must.

How to Improve Your Yields: Quick Tips

Finally, you may want to try a couple of these tips to increase your yields:

  • Always buy professional-level blends
  • Don’t be afraid to turn and train your plants so that they get the most lights
  • Go with hydro when you’re ready for bigger yields
  • Pay attention to the little things, including ventilation kits
  • Don’t be afraid to keep experimenting with new ways to grow
  • Don’t expect perfection early on – practice makes perfect!