So the question is: what is okay for outdoor weed and what is not? Even in climates that give us the luxury of the perfect outdoor marijuana temperature range there are spells of too cold and too hot weather. However, too radical a change between day and night temperatures can lead to even more stress, and should be avoided. This gives marijuana plants a chance to shift to a lower gear and have a rest. The reason is that higher temperatures burn terpenes and cannabinoids making the buds less aromatic and potent.ĭuring any stage of growth, the night temperatures should be 10☏ (8☌) lower than during the day. When plants start to form buds and then all the way to harvest, the temps should be a little lower - 65 to 80☏ (18-26☌). Young weed plants prefer a little milder conditions than the flowering ones, with day temperature between 70 and 85☏ (20-30☌).
So, with that in mind, growers have gradually come up with the following empirical figures: However, our goal is a bit different - we grow for the highest possible production of THC and other cannabinoids, as well as terpenes that make the smoke so aromatic and flavorful. And, in case you’re wondering, the ideal level of light intensity (PPFD) would be ~1500 μmol/m2/s.Īll this may guarantee the fastest rate of growth for cannabis plants. And they are:ħ7-86☏ (25-30☌) during the day, or when the lights are on.Īt least these are the figures that are the most conducive to photosynthesis and gas/water exchange processes, according to research 1. The only difference is that, in an indoor setup, we have more control in maintaining the perfect conditions. It’s because indoors we simply try to recreate artificially the natural environment that cannabis plants have best adapted to. Well, ideal outdoor marijuana temperature is actually the same for any type of grow. Outdoor Marijuana Temperature Range is Quite Inclusive.Outdoor Marijuana Temperature: Focus on the Root Zone.That Was Ideal, But What is Acceptable?.
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