Don't fertilize? First off, you don't sacrifice ANYTHING by feeding your plants unless they already have plenty of nutrients. Yeah weed is a very hardy plant but if you want to get the most out of it you asses the soil quality and strive to give it an optimal environment for the roots, which nutrient or otherwise organic depleted soil won't give you any better tasting or any higher quality cannabis. I saw one plant of Girl Scout Cookies among 24 other being grown in a 10 foot by 10 foot and 6 foot deep hole, in soil that was 50-60% peat moss by weight and the rest a blend of purposely composted soil very very rich in humus. These plants would get about 20 gallons of water every day and the grower would use thousands of dollars of nutrients on top. The plants would reach 12-14 feet tall and grow to the size of the 10 foot box, each one grossing anywhere from 30 to 40+ pounds and netting 16-20 pounds of dried weed. There are all kinds of hormones and organic microbes and fungi that work in harmony to produce such monsters. If you want to waste your time and effort growing weed go right ahead and give it water and nothing else, I will guarantee that you will be disappointed with the results and the only reason you won't is because you haven't seen what good soil Vs poor soil does. Soil that doesn't drain readily will stun the growth, soil that dries fast will promote an oxygen rich environment that makes fungus impossible to get a foothold but you will need to water more. None of that has anything to do with the nutrients that the plant requires. No nutrients, the plant will at best be in a vegetative state where it uses up the energy stored in the seed, and will not grow more than a two feet and be extremely lanky. Nitrogen might be available, so will potash, phosphorus, magnesium, but barely for anything of quality or quantity to be produced. Growing year after year in the same soil will demonstrate the level of depletion by ever retarded growth. Growing 101. I've grown both in soil and in aeroponics under water cooled lights. I've lived with growers, some that had been growing since 15-16 for 7-8 years and some that had been growing for 25 years since they were 13, in Mendocino County, literally the cannabis capital of the world. I knew the grower that was responsible for creating Cookies and I've moved hundreds of pounds of weed. I never heard of "don't fertilize". Nobody that knows anything about growing weed or any other plant will look at the person saying don't fertilize because it causes mold as knowledge on fungus or growing.