Every living being needs nutrients to grow, flourish, and survive. Plants that lack nutrients often are weak, becoming an easy target for threats and illnesses. Although very few plants growing in nature might be malnourished, those specifically grown for consumption in a limited space (like cannabis in our case) usually require regular nourishing. However, for an experienced gardener providing nourishment for plants is not only about keeping them alive, it is also promoting their growth, especially during the vegetative stage. In the case of cannabis, feeding the plant nutrients during the blooming stage contributes directly to achieving the best result possible – lots of huge and thick buds.
Learn more details in this step by step guide on How to Grow Marijuana.
Ingredients of Fertilizers
All fertilizers have:
• 3 main macronutrients:
o Nitrogen (N) – contributes to the growth of leaves;
o Phosphorus (P) – boosts the development of roots, flowers, seeds, and fruits;
o Potassium (K) – ensures strong stem growth and the movement of water in plants, as well as promotes blooming and fruiting.
• 3 secondary macronutrients: calcium (Ca), sulfur (S), and magnesium (Mg);
• micronutrients: iron (Fe), copper (Cu), boron (B), zinc (Zn), molybdenum (Mo), manganese (Mn), silicon (Si), vanadium (V), cobalt (Co) and mineral catalysts.
All the nutrients that contribute to plant growth are organized according to the elements. However, it is worth understanding that the elements are not fertilizers. The basis of fertilizers is made of compounds that have these elements. As plants consume the macronutrients in considerable quantities, plant tissue has quantities of them from 0.15% to 6.0% on a dry matter (DM) basis.
Oxygen, carbon, hydrogen, and nitrogen are the 4 main elements of every plant. The first three are generally accessible as carbon dioxide and water. Despite nitrogen being the key component of the atmosphere, it exists in a form inaccessible for plants. Because nitrogen is present in DNA, proteins and other components like chlorophyll, it is the most essential of fertilizers. Nitrogen can be made nutritious for plants only in a certain form by some bacteria and host plants that transform it in ammonia.
Plants consume micronutrients in smaller quantities, and they exist in plant tissue on the order of parts-per-million (ppm), containing 0.15 to 400 ppm DM, or less than 0.04% DM.
Three main nutrients marijuana plants need are nitrogen (N), phosphorus (P), and potassium (K), NPK ratio simply describes the amount of said elements in a fertilizer, meaning that an NPK formula like 9-3-6 has 9% of nitrogen, 3% of phosphorus, 6% of potassium, the rest being inert ingredients.
Usually, the information on the packaging, concerning the dosage of fertilizer on water, is very accurate. Obviously, such information is indicated to avoid harming the plants and above all to help growers providing plants with the necessary nutrients during each growing stage.
During the first 3 weeks of plants’ life cycle – germination, it is better to avoid feeding them because they are simply too small. Also, if you are growing for the first time, the soil has enough components for all stages of growth. It is quite easy to kill (burn) plants by overusing the fertilizer. Do not in any case pour the fertilizer directly on the plant.
During the vegetation and the beginning of the flowering cannabis requires more nitrogen because it boosts growth. NPK ratio applied during this period is 9-3-6. While during the flowering stage NPK ratio is 5-12-6 because the plant needs more phosphorus to promote flowering.
The application of a fertilizer is quite simple – you just have to mix the fertilizer in water. All fertilizers have the dosages indicated on the packaging. Usually, it’s half of a cap with the fertilizer on 1L of water. However, if you are in doubt about the dosage of a fertilizer, use less because too much of it can harm the plants.
Moreover, overuse of the fertilizer can result in slow root development, the curling of leaves, burns at the end of leaves, brown spotting and/or the loss of leaves, an early end or delay of the flowering and risk of plants getting mold during the flowering, as well as lower yields and an unpleasant aroma or taste of buds. If you notice any of these in your plants, slow down the feeding of plants.
Popular Marijuana Fertilizers for Growing in Soil
Many growers prefer ordering fertilizers (also called nutrient solutions) on the internet. However, most of those tend to be quite expensive. It is always cheaper (almost 10 times cheaper) to buy fertilizers in local gardening shops because many plants require the same nutrients as marijuana. Besides, it is possible to find fertilizers that have a similar NPK ratio as in specialized ones for marijuana.
If you are too lazy to look for yourself and still think about ordering a nutrient solution online, consider the following ones:
CANNA BioVega – an organic liquid fertilizer from an experienced company in the cannabis growing market. Although this nutrient mix is for vegetative stage only, it is said to be very potent, thus, has to be used in minimal dosages.
Flower Power – is a powder form fertilizer for those who want to be 100% that their plants get a well-balanced mix of the necessary nutrients. The company sells fertilizers for every stage of growth, and every package comes with a detailed watering and feeding schedule.
Dyna-Grow – offers liquid fertilizers for new growers in need for a simple solution. The best thing about this fertilizer – it’s one of the cheapest nutrient solutions available, and very effective, concerning high yields.
Happy potting, my stoner friends! And learn How to Grow Marijuana.
 H.A. Mills; J.B. Jones Jr. (1996). Plant Analysis Handbook II: A practical Sampling, Preparation, Analysis, and Interpretation Guide. CRC Press.
 S. Vaclav (2004). Enriching the Earth. Massachusetts Institute of Technology.
- Posted by Zion420.com
- On February 27, 2017
- 0 Comments