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Best Hydroponic Nutrients for Weed

Last Updated: December 14, 2021By Joshua Mezher

growing cannabis

The advantages of growing marijuana indoors are many. One of the most important factors is the ability to control the environment. Hydroponics help give complete control of lighting, water, and air-flow. This allows the plant to prosper and grow in a manner that is otherwise difficult in outdoor circumstances. 

The process of growing a cannabis plant outdoors and in a hydroponic setup is completely different. Since it’s a controlled environment, the plants require the utmost care and attention to detail.

Related Article: The Top 10 Lights for Growing Weed Indoors

After setting up a hydroponic system, it's also important for the plants to get nutrients, which in this case is done by adding nutrients to the water. These are known as hydroponic nutrients. 

Understanding the basics of hydroponic nutrients is the first step that someone who wants to grow cannabis should know of. 

Growing hydroponics is complicated, expensive, and time consuming, especially for a first time grower.  Get started growing your own Cannabis plant today with a Pot for Pot’s all natural soil based Complete Grow Kits!

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What Are Hydroponic Nutrients

nutrient rich soil

Hydroponic nutrients are the nutrients essential for a plant’s growth. Marijuana plants are just like any other plants and they too need proper nutrients to ensure a good harvest. 

There are three essential hydroponic nutrients: Nitrogen, Phosphorous, and Potassium, also known as NPK. Other than these, there are other essential micronutrients and minerals like magnesium, calcium, iron, sulfur, boron, cobalt, copper, manganese, molybdenum, and zinc. All of these contribute to a good harvest. 

Hydroponic nutrients are solution-based and are administered to cannabis plants through the water. Administering hydroponic nutrients is about balance and science. In a hydroponic setup, one cannot just wing it. Since the purpose of growing weed or cannabis is usually commercial, there’s a huge financial investment involved.

Taking care of the weed plant is important and to do so one needs to have a clear understanding of the ratio in which the hydroponic nutrients are to be administered.

Understanding NPK Ratio

Obtaining the right balance is crucial for growth and achieving a good harvest. The label on hydroponic nutrients is written as N-P-K and can read 10-5-5 for example.  This indicates that the solution has 10% Nitrogen, 5% Phosphorous, and 5% Potassium. 

Each nutrient plays a different role. Nitrogen is important for the growth of a plant, phosphorous plays a crucial role as it encourages the growth of the roots and flowers, and potassium is responsible for the growth of roots and for photosynthesis.  

Different Stages Of Growth

stages of cannabis growth

There are two main stages of cannabis growth, vegetative and flowering. Both of these stages require different NPK ratios. 

The vegetative stage requires high nitrogen, medium to high phosphorus, and high potassium. While the flowering stage requires low nitrogen, high phosphorus, and high potassium. 

Adding too much nitrogen affects the development of buds and is also responsible for giving them a strange taste. When the plant starts to enter the flowering stage, that’s when the buds start to form.

Potassium adds weight to the buds while phosphorus is responsible for increasing the number of flowers in the plant. 

Hence, it’s important to monitor the growth of the plant and administer hydroponic nutrients accordingly.

If not done correctly, the plants will either not yield a good harvest, or end up dying. Because of this, it’s crucial to give them proper hydroponic nutrients while taking care of their needs at different stages.

Related Article: How Much Marijuana Does One Plant Produce?

Soil and Hydroponic Nutrients

Hydroponic nutrients are vastly different from soil nutrients and they can’t be used interchangeably. Soil nutrients are made up of organic solids that will clog a hydroponic system. 

In a soil-based system, these solids are broken down by the soil and nutrients are provided to the plants, whereas in a hydroponic system, nutrients and micronutrients have to be fed directly to the plants. 

Other than that, soil nutrients have high amounts of phosphorus and low nitrogen which definitely aren’t suitable when it comes to growing cannabis in a hydroponic setup.

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In Conclusion

cannabis grown with hydroponic nutrients

Understanding and using hydroponic nutrients correctly can make all the difference in the type of yield one receives. The more care and attention one provides to these plants, the better the harvest.  It's as simple as that. That's why it is crucial to understand the basics of hydroponic nutrients. 

After following the basic principles outlined above, not only will the harvest be better, the approach to hydroponics will be more systematic and less trial-and-error. 

However, growing with hydroponics is still a complicated and costly process, with many things that can go wrong and ruin a harvest.  That's why we recommend natural soil growing, especially for first time growers.

Check out a Pot for Pot’s all natural soil Complete Grow Kits to get started growing your own Cannabis plants today!

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