- The Weed Blog https://www.theweedblog.com

The Costs And Revenues Of Growing Marijuana


cost of growing marijuana

People start growing and cultivating marijuana for a variety of different reasons. Perhaps you’re underwhelmed with the quality of the weed you purchase or you just want to bring in some extra cash. Some people grow purely for medicinal reasons and others grow for social reasons. Without a prescription, you’re likely going to be stuck with low-quality, overpriced weed—a problem that leads a lot of people to growing their own.

Growing marijuana isn’t difficult as long as you put enough time and effort into the hobby. Spending just a few hours every week can produce some fantastic results. If you’re growing just for yourself, then you don’t really require huge yields. A starter kit costs as little as $80 and can give you a nice start. Of course, growing marijuana always comes with some risks that vary depending on your location. Download my free grow guide to learn more about growing marijuana at this link.

If you’re growing purely for private use, then marijuana cultivation doesn’t need to be that pricey. Growing outdoors is easiest, because all the things needed to grow marijuana are essentially free. The sun rises every day, the plants get water from rain, and the soil is full of nutrients. In reality, to grow outdoors, all you have to do is buy some seeds. Of course, buying pots and growing your plants in fertilized, nutrient-rich soil could improve your results exponentially. You’ll see an example list with prices a little further down.

Growing indoors can also be inexpensive. CFL lights can provide you with an adequate yield without any spikes in your electric bill. A grow room with only a few plants doesn’t require a fan and/or carbon filter to reduce the smell. All you really need are seeds, soil, pots, CFL lights, and a small fan, which should only cost around $80 (or less if you’re good with your hands). Professional systems that produce higher yields generally only cost a few hundred dollars. You can buy a plug and play box from our friends at dealzer.com or build a small grow room yourself. Below are some shopping list examples:

Indoor Basic (Amazon)                  $80

1 x 125watt cfl light                         $30
3 x 2 gallon container                      $3
1 x miracle grow soil                        $4.97
1 x fan                                                  $12
3 x high quality seeds                     $30


Indoor Pro (A fertile World)       $350,-

1 x 600watt HPS bulb                      $49
1 x 600watt ballast                           $51
1 x 600watt reflector                      $34,95
1 x 500m3 exhaust fan                   $135,-
1 x 500m3 carbon filter                  $60,-
1 x fan controller                              $50,-
1 x time switch                                  $6,95
10 x 2 gallon pots                              $10
3 x miracle grow soil                        $14,91
10 x high quality seeds                 $80


Outdoor (Amazon)                          $55,-

3 x miracle grow soil                        $14,91
3 x 15 gallon container                   $9
3 x high quality seeds                      $30


New marijuana growers frequently ask things like, “What kinds of yields can I anticipate?” or “How much good marijuana can I get from a single plant?” Of course, every situation is different and many variables determine how much usable marijuana you will end up with.


Good lights are one of the most important factors when growing marijuana indoors. Veteran growers can achieve yields of around 1 gram (0.035 ounces) per watt of light. For example, a 400-watt HPS lamp can produce around 400 grams or 14 ounces of good marijuana. A grow room containing 1200 watts of light will translate to 1.2 kilograms or 42 ounces of good marijuana. The correct equipment, nutrient quantity, air quality, space between plants, and other important factors all contribute to the success of any indoor garden. For beginners, the yields will probably look like the following:

An average of around 1.5 to 2.0 oz  (3.5 oz for advanced growers) with 200-watt CFL lamps in a grow cabinet that measures 3.5 x 1.5 x 6.5 ft.

An average of around 3.0 to 5.0 oz  (9.0 oz for advanced growers) with a 250-watt HPS lamp in a grow cabinet that measures 3.5 x 1.5 x 6.5 ft.

An average of around 4.5 to 9.0 oz (14 oz for advanced growers) with a 400-watt HPS lamp in a grow room that measures 3.5 x 3.5 x 7 ft.

An average of around 5.0 to 10 oz (21 for advanced growers) with a 600-watt HPS lamp in a grow room that measures 4 x 4 x 8 ft.

An average of around 9.0 to 18 oz (36 for advanced growers) with a 1000-watt HPS lamp in a grow room that measures 5 x 5 x 8 ft.

A great way to save money in the long run is to buy LED lights. They save money on electricity, and don’t heat up a room like other grow lights which saves you money on air conditioning and fans. You can find out more about LED grow lights by clicking on the banner below:



Simply placing your seeds on some dirt and letting them sprout without proper nutrients or care will get you maybe a few ounces of marijuana. With perfect conditions outdoors, you can yield up to around 18 ounces (500 grams) for each plant. It’s important to have at least two meters of space between the plants. The plants also need enough water and nutrients without contracting any diseases or being attacked by pests. Containers (if you use them) should be the 50-liter (15-gallon) variety. Germinating the plants early in the season allows them to grow much larger. It may be in your best interest to germinate the seeds indoors so that you have total control over the temperature and humidity.

For some, growing marijuana might just be about having your own home-grown weed. But, you really have to tend to your plants and make sure they’re happy, so to speak. Everyone can grow cannabis. If you can’t grow indoors, then maybe try your garden or a terrace on the rooftop. Forests, parks, cornfields, or a friend’s garden are also applicable locations. Check out my free grow guide for more tips on selecting a site.

If you want start growing please download my free grow guide and order some high quality marijuana seeds at this link here. We ship seeds to the US, CA and many other countries. All customers get 24/7 grow support.

Source: ILoveGrowingMarijuana.Com


About Author

Robert Bergman is a master marijuana grower. Robert Bergman is the author of 'Marijuana Plant Care' and 'The Marijuana Grow Bible'.


  1. Humboldt billy on

    Miracle grow is unfit for vegetable production much less anything you would smoke, People please stick with organics, all you need is pro mix, 2 types of bat guano, 1 for veg and 1 for flowering, and some worm castings and molasses. Brew tea using these organic components are you will have a great product

  2. Thanx again, I know i enjoy reading that CannaGramma! She is pretty informative!

  3. I use one of their products too, I think it’s them. Tiger Bloom! I just read as much as I can from everywhere and then make an educated decision. If I don’t like what I read, I typically move on to find something that is more in line with my own thinking…aren’t we all like that? LOL Skipping it works. Good luck with your medicine, Dr. J!

  4. Hey Sari! I use Happy Frog and have great luck. I agree Flush, Flush Flush. My Bubba Kush just turned out WOW. thanx for your cure advice. I do try to give this guy an honest chance to teach me something, as I said I read it twice (and i have phenomenal comprehension skills) and just felt lost in the end with no real input except for where I should get my seeds of course. Next time I see he wrote an article I will probably skip it. I’ve been accused of being a b*i*ch before hahaha

  5. Hey Jamie!
    I think he’s talking of the Miracle Grow SOIL, not the fertilizer. It’s not bad stuff, but I like Ferti•lome better. I bought some cheap organic stuff last year and I sure was sorry when all the FREE bugs showed up in all my houseplants that I repotted with it.

    I know purists don’t think this, but what goes into the soil during the growing period doesn’t matter as much as what you are using during flowering, and even with organics, they should be flushed before harvest.

    If I had a blog, (oh yeah, I do!), and I needed more info than I was able to provide, (and I do), I would let a trusted friend write for me and sell products. Robert could keep the selling to a minimum, but oh well.

  6. wait….i purchased a quality light and some pots, a stovehood exhaust fan from Home Depot with $5 ducting. My organic soil costs 25 bucks occasionally and then whatever seeds or clones cost initially. My grow is very successful for $70 extra dollars in electric a month. How is it these packages cost so much? also notice the link for seeds again and again…this is a sales pitch people! It doesn’t Have to cost this much. oh and Miracle Grow contains things that are unfit for human consumption. Just my opinion though. I read this twice trying to get more out of it but i again am disappointed in an article that i read wanting to learn something and it just didn’t teach me anything except where to get his seeds over and over and over

  7. Where can people find prices like that for HID reflectors and ballasts? I would love to get my hands on these supplies at those prices!

    I really appreciate what you’re doing here, and I agree that getting started growing cannabis does not need to be nearly as difficult or expensive as many people make it out to be, but I’m not sure if you want to tell new growers to get Miracle-Gro soil. Miracle-Gro soil does not have the right nutrients to get plants through the flowering/budding stage, and growers will have to supplement with nutrients during the flowering stage to get their plants safely to harvest.

    I see many new growers get in trouble when they try to use Miracle-Gro for cannabis. There’s nothing inherently wrong with Miracle-Gro nutrients, but their standard formula is not formulated for a flowering plant like cannabis. I you don’t know how to use nutrients correctly, you will run into nutrient problems that can hurt or even kill your plant. That’s why I generally recommend new growers get a nutrient system made for a flowering plant like cannabis or tomatoes. A really cheap 2-part option is to get “Dyna-Gro Foliage Pro” for the vegetative stage and “Dyna-Gro Bloom” for the flowering/budding stage. You can actually follow the directions right on the label. These nutrients will work in any setup (hydro, soil, coco coir, etc) for cannabis and a small bottle of Dyna-Gro costs less than $10 and will be enough for an entire grow cycle for several plants. I’ve written more about some of the different cannabis nutrient options here: http://growweedeasy.com/best-marijuana-nutrients-review Speaking of nutrients, I believe it’s also important to explain the significance of getting good nutrients and maintaining root pH for proper cannabis growth and yields.

    Thanks for posting this, and I believe the general info you’ve provided about yields for the different types of setups will be very helpful to many new growers. Your average yield estimates seem pretty spot on from my experience with new growers.

    Looking forward to your next post!

  8. A CFL light is amazing if you want the worlds smallest yields, and virtually no potency, way to not mention LED lights at all, which can create perfect potency without having to buy a ballast, bulb, reflector, exhaust fan, carbon filter, and controller, and bring down the price to roughly $250 for a 150w LED, the pots, the soil, and the seeds. On a separate note, where in the world did you find a ballast for $51? Last time I checked the lowest one ran at least $61.

  9. Ryan Rushing on

    IV seen people set up 150$ green houses that yeilded a pound from each plant and there was 5 plants in the greenhouse

  10. Johnny Bloomington on

    There’s a high variant between average indoor oz. amounts. That’s written like snowfall amounts on the local news! ;)-~

  11. Hi Johnny,
    I can appreciate your article for trying to provide some useful info, but as a grow store owner I’m afraid that the pricing you suggest qualifies as a fire waiting to happen. $51.00 for a 600 watt ballast? All you can get for that is trouble. Like I said, I appreciate what you’re trying to do but misinformation leads to failure down the road, which leads to going back to the black market which none of us want.

  12. Imo if you absolutely have to use cfls, get a multisocket (tweet me for a pic) and use multiple smaller cfls, the big ones are less efficient for the amount of lumens. When I first started I had great results with three fixtures each of which with 3 26watts which is the 100 watt equivalent bulb. Works amazing (for cfls) and I still use it for moms and babies

Leave A Reply