Robert Bergman

March 31, 2020

Weed fertilizers come in all shapes and sizes, and most of them achieve the desired effect of producing better weed plants with better yields. Many fertilizers range from relatively common store-bought substances to somewhat outlandish, but easily accessible resources. Whatever you use, it’s important to understand the value of fertilizer for the weed plants.

Cannabis relies on fertilizer to get its valued nutrient content. Without any nutrients (food), the plants will end up withering away to nothing. Just having water and light won’t be enough to get your plants thriving. Fertilizers can go a long way in doing just that. But, what are the best fertilizers to use?

What every homemade fertilizer for weed should consist of

There is some logic behind sticking with a proven formula. For years, garden centers across the world have sold Miracle-Gro and other packaged fertilizers at relatively inexpensive prices. Using these fertilizers is a tried and true method that has worked for a variety of different gardeners for a variety of different plants. These fertilizers also give you the added benefit of listing the number of nutrients they have in the soil.

For instance, most store-bought fertilizers work off of a standard ratio between nitrogen (N), phosphorous (P), and potassium (K). This is called an NPK ratio and it lets you know exactly how much you’re feeding to your plants. Download my free marijuana grow bible at this link and learn more about making fertilizers!

Some of the easiest and most effective ways to make homemade fertilizer for weed

Human urine

One of the strangest fertilizers you may have ever heard of is human urine. Indeed, the yellow stuff is chock-full of the nitrogen that can promote stem and leaf production. It is important to not urinate directly on the marijuana plants or even near the plants because it might kill where it touches. This is because the urine has too high of a concentration of nitrogen for it to be safe. That is why it must always be diluted in about a gallon of water and then used quickly. If it’s not used soon after the solution is made, then you run the risk of ammonia-forming which could infect and kill the plant.


Of course, another relatively inexpensive and also tried and true method is composting. Composting is nature’s way of really highlighting the circle of life. Any organic material you might have lying around in your backyard is sufficient for composting and to be used as a homemade fertilizer for weed. This can take the form of stashed away dog feces or it can be the product of decayed oranges from an orange tree. You could even combine different organic materials that have been lying around for months or years at a time. Although it might strike you as a gross way to make homemade fertilizer for weed, it is one of the best and most natural ways to produce a thriving crop.

There are more options for fertilizers that you might want to try, but these are certainly two of the best (or at least the easiest to use). Whether you’re peeing in a bottle or going down to the garden center to buy a bag of pre-made fertilizer, you’re going to increase your marijuana yield with higher nutrient content. In the end, that’s all you’re really looking for when it comes to fertilizers.

If you want to start growing marijuana download my free grow guide and order some high quality seeds at this link here. We ship seeds to the US, CA and many other countries. For any growing related question please visit the marijuana support page.


The founder of I Love Growing Marijuana, Robert Bergman, is a marijuana growing expert that enjoys sharing his knowledge with the world. He combines years of experience, ranging from small-scale grows to massive operations, with a passion for growing. His articles include tutorials on growing... [read more]


Please Post Your Comments & Reviews

Your email address will not be published. Required fields are marked *

    1. By michael dean

      ,02 Sep 2018
      turkey crap works really well, just dont over do it and it does stink, but the yield is better and the flowering stage wonderful. i do usually an acre or so at a time, with a plant every 14 inches, […]Read More
  1. By John

    ,20 Mar 2014
    When i see all of these organic fertilizers these guys are using, it reminds me of all the pills i take for pain and other problems. It makes ya wonder if it's really woth it, i know the pills aren't, […]Read More
  2. By Shawn

    ,08 Jul 2014
    Urine (diluted 7 parts water to 1 part urine) works great for lawns, vegetable gardens, and fruit trees, so it is not surprising it would promote healthy weeds. I keep a water bottle in the garage to keep well hydrated […]Read More
  3. By pbone

    ,20 Jun 2015
    i've read a lot about this and it does all really pointing at urine being great at being a real good fertilizer. i do have a question though and would be interested in getting any feedback etc from anyone who […]Read More
    1. By KJ

      ,15 Jun 2016
      This might sound out there but using urine from a sick person to grow fruits, vegetables, Weed or anything else that sick person might want to consume might end up being a taylor made cure from Nature ! Nature has […]Read More
    2. By loudog

      ,14 Jan 2018
      do not use urine it will not work a less you eat only vegetables and to much N not any p-k and it will stink
  4. By latewood

    ,24 Jun 2015
    Hey Mark, Urine can save your life in the wilderness; It is full of nutrients.
  5. By latewood

    ,24 Jun 2015
    Pbone, I am sorry to here of your affliction. I am not a Dr. With that said; I have to think that if you have an issue that is making you sick, I would restrain from using my urine for […]Read More
  6. By estee

    ,10 Jul 2015
    I have a plant that is about a month old and I noticed the leaves were turning yellow so I mixed my urine with water and fed the plant, the next day it looked droopy, I thought I killed it […]Read More
  7. By Christal

    ,03 Jul 2016
    If you use urine, do you still need other fertilizer?
  8. By jdub

    ,31 Aug 2016
    I prefer a good 5 gallon bucket filled with Diarrhea for fertilizer keeps the soil conditioned as well just mix it in the soil with your hands cheers!!
    1. By Roy ILGM

      ,02 Sep 2016
      Thanks for the tip jdub, hope it works for you
    2. By Kelly

      ,31 Jan 2018
      That’s going way to far for fertilizing.
    3. By Kelly

      ,31 Jan 2018
      That’s going way to far for fertilizing using poop.
  9. By Jvool

    ,16 Apr 2017
    First Time using a fertilizer, my step dad says fish guts mixed with potting soil. Will that work with the urine?
    1. By latewood.ILGM

      ,20 Apr 2017
      Jvool, Personally, I would not use fish guts because they will attract all kinds of pests. Fish meal, or Fish emulsion would be a better choice. You might want to join our support forum! ilovegrowingmarijuana.com Happy growing :) – I❤️GM
    2. By michael dean

      ,02 Sep 2018
      fish guts work reasonably well when growing a fairly small crop but i wouldnt use urine as well for possible over nitrating plant and killing it.
  10. By DeelikeWeed

    ,16 Apr 2017
    Hey I'm growing some cannabis for the first time , and I haven't been using no kind of nutrients for the sake of killing them , so far so good but I would like to try the urine mix , […]Read More
    1. By latewood.ILGM

      ,20 Apr 2017
      DeelikeWeed, You use it immediately as mentioned in the article above. Happy growing – I❤️GM
  11. By Deanna

    ,18 Apr 2017
    This website is wonderful I am so grateful thank you for helping. 😛
    1. By Roy ILGM

      ,18 Apr 2017
      Glad to help out Deanna! – I❤️GM
  12. By Andrea Conklin

    ,24 Apr 2017
    Definitely trying the urine! Thank you 😊
    1. By latewood.ILGM

      ,25 May 2017
      Tokkie, Egg shells are great to add to a compost. I would not advise just dumping egg shells directly into garden. compost them 1st. Happy growing!
    2. By michael dean

      ,02 Sep 2018
      the best way i have found to use eggshell, is to wash them let them dry completely and pulverize them in a food processor or blender untill a med fine powder, then add about five ti six dried banana peels […]Read More

    ,13 Jun 2017
    Using emergency blankets instead of store bought mylar excellent alternative price 40 dollars roll mylar blanket 1 dollar. 4ft × 4ft × 8 ft. 1 blanket. Try it works great !!
  14. By Rathebe

    ,21 Jun 2017
    Guys ive been trying to grow this electric broccoli for 4 months with no luck until some dude told me to add potatoes to my soil, as it rots it serves as food for the plant, I have a one […]Read More
  15. By chuk

    ,13 Jul 2017
    remember your urine will expel all sorts of things, fine for a plant outside grown direct in soil, but I wouldn't recommend it for potted plants. I found this article to be unhelpful and trying to sell something for some […]Read More
  16. By p.

    ,11 Feb 2018
    Putting crushed egg shell around your plants can help deter slugs and snails
  17. By jennifer

    ,13 Apr 2020
    Pee in a plant omg wow ,,, I was gonna use apples ,bananas ,onions but just their feelings along with coffee grounds and others I want T H C too be very good like very good can I do it […]Read More

World Icon

500 Helpful Articles

200 detailed grow guides

Group Icon

35,000+ Daily Visitors

500,000+ Grow Bible readers

Plant Icon

100 Hand-Picked Strains

8,000+ connected businesses