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By writing this post, we are neither condoning or condemning the use of cannabis. This post is not based on actual experience, because we are not based in a legal state. So, this is just research and a comparison to our tobacco growing guides. We believe that the similarities between the two plants provides us with an understanding of the nutrient requirements for cannabis. In addition, we feel that natural fertilizers are a superior product for the cannabis industry. Neptune’s Harvest makes a superior product for use as a cannabis fertilizer. This is due to the low risk of burning plants with excess nitrogen. Because cannabis is illegal in some locations, always check with local authorities.

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.

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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? We’re here to advise you!


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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. Of course, none of these nutrients are typically included in chemical fertilizers. Usually, they only focus on N-P-K numbers. An organic product like this supplies many trace minerals from natural sources. This feeds the soil with nutrients the plant needs to thrive.

Typically, higher nitrogen levels are needed in the growth phase of cannabis production. During this phase, long-duration lighting is used to provide rapid growth. Using 12 hours or more of lighting makes the plant believe it is spring or summer. After the plants reach maturity, indoor growers typically reduce the lighting hours. This tricks the plant into thinking autumn has arrived. Cannabis goes to bud in the fall. So, reduced lighting triggers the budding process. High levels of phosphorus are required for flower production. Therefore, budding is a great time to supplement with natural kelp.

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

First, mix two tablespoons of Neptune’s Harvest 2-3-1 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 Neptune’s Harvest 2-3-1 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. Adjust your feeding according to plant responses.

Cannabis Fertilizer for the Best Buds

As we mentioned before, nitrogen requirements go down during flowering. Instead, you should add phosphorus during this time. First, combine 1 tablespoon of liquid bonemeal and a gallon of chlorine-free water in a sprayer. Then you should apply this mixture to the leaves one week before reduced lighting time. You can apply again right 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 stop all fertilization five days before harvest. If you live in a state where cultivation is legal, feel free to send us a message. Let us know how this application program works. If you tried this fertilization schedule on your plants, we’d love to hear from you!

Neptune’s Harvest: The Best Cannabis Fertilizer?

So, there you have it! Cannabis can benefit from Neptune’s Harvest fertilizer. You can use either foliar or soil feeding to benefit your plants. Nitrogen is great for early growth, but phosphorus is needed for buds. You need to observe your plants before and after feeding. That way, you will know how they respond.

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