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May 21, 2025 by Weedwonderland 3 minutes

Cannabis Fertilizers: How Nutrients Shape Potency and Yield

Cannabis cultivation

Selecting the right fertilizer for cannabis can have a huge impact on yield, potency, flavor profiles, and overall plant health. With the evolution of cannabis cultivation practices, growers are increasingly focused on optimizing nutrient delivery systems for their challenging crop.

Cannabis Nutritional Needs: best fertilizer for cannabis

While conventional fertilizers supply the primary macronutrients (NPK), cannabis excels with precise ratios for each stage of its development. An ideal fertilizer will provide not only these primary macronutrients, but also secondary nutrients, such as calcium and magnesium, as well as micronutrients, including zinc, iron, manganese and boron. Copper, zinc, manganese, iron, magnesium, calcium and nitrogen are preparatory nutrients utilized through the vegetative period and beyond. The vegetative stage includes higher nitrogen fertilizer formulations that assist in growth of leaf material and stems, flowers will need phosphorus, potassium and the least amount of nitrogen. The best fertilizers for cannabis will include either the poorest nutrient ratios or the base nutrients enhanced using chelation or chemical processes which contribute to higher levels of nutrient bioavailability.

The Advanced Nutrients pH Perfect series is among the best available to growers.
The General Hydroponics FloraGro series is considered among the best for fertilizing cannabis in soilless and hydroponic systems.

Good fertilizer for cannabis: More diverse organic options are gaining popularity.

Organic fertilizer for cannabis compost teas, worm castings, bat guano, seaweed extracts, and fish emulsion create living soil, while developing complex and diverse terpene profiles while having the least impact on the environment. All of the above options feed soil microbiology, not directly feeding the plants. With all soil microbiology, this approach creates a self-sustaining growing medium, improving with each growth cycle. Dr. Earth Pure Gold is the best organic fertilizer cannabis. It is balanced for plant nutrition with the addition of beneficial and quality ingredients. Its use of mycorrhizal fungi and beneficial soil microbes will nourish and build soil health through nutrient delivery.

Mixing Custom Blends for Specific Growing Style

Some experienced growers still develop custom fertilizer regimens by using a combination of products that allows them to precisely calibrate their vegetated cannabis sources. Some growers utilize dry amendments for soil grows. Using bone meal, blood meal, and/or kelp with their growing medium before planting is one option. Other growers may have a regiment of liquid feeding schedules or mix and measure their solution during every watering event. Cannabis generally works on the principle of “less is more” when fertilizing. Nutrient burn (the yellowing and curling of the leaf tip from an excessive amount of feed) is one of the more common cultivators’ mistakes. There is often no benefit to starting with full-strength nutrient recommendations; start with half-strength solutions, and then increase to preference based on the response of the plant. When in doubt, err on the side of caution. Water quality has a significant impact on the performance of fertilizers. Fertilizers may have optimal pH ranges of performance to fit into; like 5.8 – 6.2 in hydroponic systems, and, 6.0 – 6.8 for soil systems. Ultimately, the best fertilizer choice will be totally dependent on your growing environment, your experience level, and the growing goals you have established. Here at Weed Wonderland, we have done the hard work for you. Browse our selection of cannabis strains, each grown with the correct balance of nutrients.

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