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Cannabis Fertilizer: Best Marijuana Fertilizers & Nutrients

Cannabis is a naturally occurring plant with psychoactive properties that have been used for centuries. There are many different cannabis fertilisers and nutrients available to growers in dispensaries and online stores. 

The best cannabis fertilisers and nutrients can help increase your plants’ yields and potency.
In this article, we will learn what the best fertilisers for cannabis plants are and the advantages/shortcomings of both organic and traditional fertilisers. It will also provide an overview of how to use them in your garden.

Organic & Traditional Fertilizer Options

Organic fertilisers are often favoured by gardeners who believe they are better for the earth and the environment. However, organic fertilisers do not provide the nutrients needed for a successful crop.

Organic fertiliser is made from natural sources, such as animal manure, plant waste, composts, or green manures. They can be expensive because they require more time to produce than their synthetic counterparts.

They contain nutrients essential for healthy plants but cannot be synthesised by plants themselves; therefore, they must be applied to the soil before planting a seed or transplanting a young plant into a new location.

Organic farming has become increasingly popular in recent years, as it is more environmentally friendly and effective at providing crop nutrients. Several organic fertiliser options are available, which can be tailored to the specific needs of your farm.

Top Fertilizers For Growing Your Marijuana Plant

Marijuana plants need nutrients to grow. You can choose from many different types of natural fertilisers, such as compost, manure, and seaweed. However, it is best to use organic fertiliser because it is the most sustainable option.

Fertilisers for growing marijuana include worm castings, coffee grounds, and bone meal. Marijuana plants also need a pH balance of 6-8 to thrive.

When choosing a fertiliser for your marijuana plant, remember that you should not use products with high amounts of nitrogen or phosphorus because these fertilisers can cause problems with the plant’s roots and leaves.

Let us get into more detail:

Cutting Edge Solutions Uncle John’s Blend Growing Additive

Cutting Edge Solutions Uncle John’s Blend Growing Additive is a great fertiliser for your marijuana plants because it contains all the necessary nutrients your weed needs. It also has a small amount of nitrogen which helps promote healthy root growth and flowering. This additive can be used on indoor and outdoor plants to improve their health and growth rate.

Fox Farm Liquid Nutrient Trio Product

Fox Farm Liquid Nutrient Trio is a liquid fertiliser designed to provide the highest yield of marijuana plants. It is specially formulated for hydroponics and organic farming. It contains three essential nutrients for your plant’s growth – nitrogen, phosphorus, and potassium.

Advanced Nutrients Big Bud Liquid Fertiliser

Advanced Nutrients Big Bud Liquid Fertilizer is a liquid fertiliser highly recommended for growing your marijuana plant. Many different types of fertilisers are available in the market, but not all are good for growing marijuana plants. Some of them may contain harmful chemicals that can harm your plant. The Advanced Nutrients Big Bud Liquid Fertilizer contains no harmful chemicals and is 100% organic.

Flower Fuel 1-34-32 NPK

The most important fertiliser for growing marijuana plants is Flower Fuel 1-34-32 NPK. It is a low-cost, fast-acting, and easy-to-use fertiliser that has been shown to increase the yield of marijuana plants. The most important part about growing marijuana plants is ensuring you have the proper nutrients. 

This means you must ensure that your plant has the right amount of nitrogen, phosphorous, and potassium in it. Flower Fuel 1-34-32 NPK can be used as an all-in-one solution for fertilising your plant because it contains all 3 of these nutrients in a single product.

General Organics Go Box

General Organics Go Box is a fertiliser that can be used to grow marijuana plants. It contains all the nutrients the plant needs to grow and smells strong. The fertiliser is made of natural ingredients safe for humans and animals. It also contains molasses, blood meal, bone meal, iron sulfate, limestone, and more.

Making Your Own Marijuana Fertilizer

The marijuana industry is growing rapidly, and there is a need for more marijuana products. Marijuana growers are looking for ways to increase their plants’ yield, which can be done using certain nutrients.

Many different types of fertiliser can be used in the marijuana industry. Some fertilisers help with flowering, while others help with the overall growth of the plant. The best fertiliser depends on your needs and what you want to grow.

Choosing a quality fertiliser is important because it will impact your yield and the quality of your end product.

Vermiculite, Perlite, & Human Urine

Vermiculite, perlite, and human urine can be used as a fertiliser for cannabis plants. It is important to know what to use to get the best results.

  • Vermiculite is a natural mineral that is often used in potting soil
  • Perlite is an artificial mineral from volcanic rock ground into a fine powder.
  • Human urine contains all the nutrients necessary for marijuana plants while adding some extra nitrogen which helps the plant grow faster.

Bat Guano and Fish Meal

Another way is with Bat Guano and Fish Meal. Bat Guano is a dark brown or black powder made from the droppings of bats. Bat guano has high nitrogen, phosphorous, potassium, calcium, magnesium and sulfur concentration. It also has trace elements like copper, iron and zinc.

Fish meal can be used as fertiliser too, but it’s not as good as bat guano because fish meal doesn’t have enough nitrogen and a lower total phosphorus concentration.

Worm Castings

Worm castings are a byproduct of composting worm castings, which is a process that turns food waste into worm poop. Worm castings can be used as fertiliser for plants, but it is also a great source of nutrients for your garden. It contains nitrogen and phosphorus, which are essential for plant growth. The best time to use it is when you have finished your gardening season and have ready sources of nitrogen and phosphorus.

Worm casts can also be used in composting projects to make the process more efficient and reduce the amount of waste produced.


To make your marijuana fertiliser, you must start with the basics – composting. Composting is breaking down organic matter into soil-like materials that can be used for gardening or farming. Adding compost to your garden can help plants grow faster and have more flowers.

Composting is an easy way to eliminate excess plant leaves, stems, and other plant matter that would otherwise end up in landfills and pollute water sources.


There are several ways to make the best fertiliser for marijuana plants. The most common methods are compost, manure, and worm castings. Additionally, marijuana plants need the right fertiliser to thrive. It must be a rich source of nutrients and have a balanced pH level. 

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What are the benefits of using fertiliser for marijuana plants?

Marijuana plants need many nutrients to grow and ensuring they get the nutrients they need is important. The best way to do this is by using fertiliser on your plant. The benefits of using fertiliser for marijuana plants include better yield and quality. 

How much should I apply fertiliser for marijuana plants?

The answer to this question is dependent on the plant’s needs. In general, cannabis plants require around 0.5-0.8 grams of nitrogen per square meter per month. However, it can vary depending on the plant’s size and how much light it receives.

Fertiliser application rates should also be based on the quality of soil for cannabis plants because different soils are more or less able to absorb nutrients in different ways.

What is the best fertiliser for marijuana plants?

Marijuana plants require many nutrients to grow and produce the best quality marijuana. The most effective fertiliser for marijuana is nitrogen-rich. Different types of fertilisers are available in the market, including organic, chemical, and natural ones.