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Growing weed indoors makes more sense if you want to have greater control over different environmental conditions, such as a light cycle, humidity, and temperature levels, but you need to use grow ...
Plants can be grown with the use of grow lights, sunlight, or a combination of the two. Due to the heat generated by high power lamps, grow rooms will often become excessively hot relative to the temperature range ideal for plant growth, often necessitating the use of a supplemental ventilation fan.
The optimal day temperature range for cannabis is 24 to 30 °C (75 to 86 °F). [12] Temperatures above 31 °C (88 °F) and below 15.5 °C (60 °F) seem to decrease THC potency and slow growth. At 13 °C (55 °F) the plant undergoes a mild shock, though some strains withstand frost temporarily.
Temperature scale used to define USDA hardiness zones. These are annual extreme minima (an area is assigned to a zone by taking the lowest temperature recorded there in a given year). As shown, the USDA uses a GIS dataset averaged over 1976 to 2005 for its United States maps. Global Plant Hardiness Zones (approximate).
How to get started growing marijuana Shown are marijuana plants at the Finger Lakes Music, Comedy and Cannabis Festival in 2021. Cannabis seeds can be purchased from commercial retailers.
Cannabis growing wild in a ditch in Buffalo County, Nebraska. Feral cannabis, or wild marijuana (often referred to in North America as ditch weed), is wild-growing cannabis generally descended from industrial hemp plants previously cultivated for fiber, with low or negligible amounts of psychoactive tetrahydrocannabinol (THC).
Can be kept short in stature for "stealth" growing; The Cannabis ruderalis heritage causes flowering after 2–3 weeks from germination [17] No need for a separate vegetative and flowering environment (unlike with photoperiod dependent/ short-day strains) Due to short life span can be grown in cold climates where summers are short and cold [18]
Cannabis also has a long history of being used for medicinal purposes, and as a recreational drug known by several slang terms, such as marijuana, pot or weed. Various cannabis strains have been bred, often selectively to produce high or low levels of tetrahydrocannabinol (THC), a cannabinoid and the plant's principal psychoactive constituent .