The primary cause of any major irregularities in soil pH is the actual nutrients that you apply to the soil. Unlike just using standard dirt, your soil will need to be infused with nutrients. Sometimes, you can produce an adequate amount of nutrients just by using a unique fertilizer combination. But, in many cases, you will “water in” the nutrients using a solution.

Of course, if you accidentally include too many nutrients you could wind up making the soil toxic (which would cause one of the soil control procedures laid out above). Professional growers prefer to feed their plants water with a pH of around 6. In any event, all plants need nutrients to thrive, and providing them with those nutrients can make sure that your work pays off in the end. We have already mentioned “NPK” (Nitrogen, Phosphorous, Potassium) as the three major nutrients that every grower needs to understand. During vegetative growth, the fertilizing solution should be one in which the concentration of N is higher than or equal to both P and K. Again, you can help with nutrient infusion by using a fertilizer if you want to. Fertilizers will, in large part, be mixed in with the soil prior to beginning the growth process. In general, though, you can find solutions that can be used for “feeding” the plant.


Nitrogen Deficiency Phosphorous Deficiency Potassium Deficiency


In most cases, the plant won’t need to be fed that frequently. In fact, you only need to feed it about once every week if everything is progressing satisfactorily. However, you should never feed the plants with 100% of the nutrient content because marijuana plants “burn” easily. Instead, dilute the solution to around 50% so that you don’t have to employ a soil flush. Other important chemicals include Calcium (Ca), Magnesium (Mg), and Sulfur (S). In general, you might find it difficult to notice any major changes in the amount of nutrients that the plants take in or don’t. In fact, in most cases, the nutrient uptake will constitute the least of your worries. As long as the soil’s good and you continue to use the same regimen for your nutrient solutions, you should be all right. Many growers keep several diluted solutions on hand to make growing just a little bit easier. One solution should be an NPK solution where N has the most prominent concentration. This should be used for vegetative growth. Another should be an NPK solution in which the P has the highest concentration (used for flowering stage). You can also keep a couple of bottles of a diluted micronutrient solution in the event that your plants really start to turn. Nutrient deficiencies can damage your marijuana plants and serious decrease the yield.