![]() Natural organic fertilizers such as manure, bat guano, and compost tea are also helpful. Many growers also believe they result in a better-tasting smoke. Organic nutes enrich the growing medium by breaking down existing nutrients so they can be easily absorbed. ![]() Autoflowers only need one-eighth to one-half of the nutes that photos require, so we recommend starting with a low dose and increasing the strength if needed. Just make sure to avoid feeding your plants large quantities of fertilizer. There are some nutrients designed specifically for autos, but you can also use nutes intended for photoperiod cannabis. These are usually included in commercial fertilizers that have the three major macronutrients. The ideal N-P-K ratio varies depending on the growth period:Īs you can see, cannabis plants need more nitrogen (N) and potassium (K) in the seedling phase, plenty of nitrogen for vegetative growth, and large quantities of phosphorus (P) for flower production.Ĭalcium, magnesium, and sulfur are also essential, along with trace amounts of micronutrients like copper, zinc, and iron. Most fertilizers are labeled with an N-P-K ratio showing how much of these nutrients they contain. The three most important macronutrients for growing cannabis, including vegetative growth, are nitrogen (N), phosphorus (P), and potassium (K). Final Thoughts What Nutrients Should I Use for Autoflowering Cannabis?
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