Best Fertilizer for Cannabis Plants?

Disclaimer:
By writing this post, we are neither condoning or condemning the use of cannabis. This post is not based on actual experience, just research and a comparison to our tobacco growing guides. We believe that the similarities between the two plants provides us with a good understanding of the nutrient requirements for cannabis. In addition, we feel that natural fertilizers are a superior product for the cannabis industry due to the low risk of burning plants with excess nitrogen.

In posting this, we are just seeking to provide some facts about fertilization rates and organic versus chemical. Today, we are not going to comment one way or the other on the legality of growing cannabis. Nor should this post be seen as legal advise. You should always abide by federal, state, and local laws. We do not support illegal activity, so check with your local authorities before growing!

Politics Aside, This is an Amazing Plant!
Today, we will not get into the politics of cannabis. The intent of this article is simply to educate and inform. Having said all that, this plant is quite simply amazing. Cannabis is likely one of the first plant cultivated by humans. It has been proposed that cannabis contributed to the evolution of the human brain due to its neuroregenerative properties.
 
It can produce more paper per acre than agroforestry. Hemp can be used to produce everything from plastics, clothing, food, or insulation to lightweight automotive panels or paint. Hemp products account for a $580 million-dollar market in the US alone. Global production of hemp reached 67,785 tons in 2013. And yes, the US Constitution was written on paper made of cannabis fibers.

Like it or not, cannabis cultivation will continue to increase world-wide. From both an industrial and medicinal standpoint, there is simply too much value to ignore cannabis as a crop. So, what’s the best way to care for this plant?
 
Nutrient Requirements for Cannabis Fertilizer

Aside from the usual N-P-K, cannabis requires ample calcium, magnesium, and sulfur to thrive. Additionally, trace levels of silicon, boron, cobalt, copper, iron, zinc, and manganese are important for healthy cannabis plants. Of course, none of these micronutrients are typically included in most chemical fertilizers that only focus on N-P-K numbers. An organic product like our 4–3–3 fertilizer supplies many trace minerals from natural sources.
Typically, higher nitrogen levels are needed in the growth phase of cannabis production where long-duration lighting is used to provide for rapid growth. After the plants reach maturity, indoor growers typically reduce the lighting hours to trick the plant into thinking autumn has arrived. This triggers the budding process where high levels of phosphorus are required for flowering.
While it is easy to damage your cannabis plants with too much chemical fertilizer, organic and natural fertilizers allow more room for mistakes. We suggest that indoor growers using potting soil avoid traditional fertilizer to preserve the microbiology within their growing medium. As an alternative we propose a feeding schedule suited to indoor growing.

Cannabis Fertilizer for the Growth Phase:

Mix two tablespoons of our AGGRAND 4–3–3 organic fertilizer into a gallon of chlorine free water. Next, add this solution to a spray bottle for foliar feeding. Then you should apply this mixture to the leaves once each week. In a different container, mix ¼ teaspoon AGGRAND 4–3–3 organic fertilizer with 1/8 teaspoon Liquid Lime, 1/8 teaspoon Epsom salts, and a gallon of chlorine free water. You can apply 1 cup per plant to the soil every two weeks during the growing stage.

Cannabis Fertilizer for the Best Buds:

As we mentioned before, nitrogen requirements go down during flowering, and phosphorus should be added during this time. First, combine 1 tablespoon of our liquid bonemeal and a gallon of chlorine free water in a sprayer. Then you should apply this mixture to the leaves one week before reducing the lighting time, and again one day after tricking the plants into thinking it’s fall. Additionally, you can add 1 cup of this to the soil around each plant during week one of the budding. Now we can stop all fertilization five days before harvest. If you live in a state where cultivation is legal, feel free to send us a message and let us know how this application program works. If you tried this fertilization schedule on your plants, we’d love to hear from you!

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