If you’re growing indoors, you can force a weed plant to flower after only a few weeks when it’s small, or after several weeks when it’s big. If you’re growing outdoors, you’re at the whim of the seasons and will have to wait until the sun starts to go down in fall for it to flower and then to harvest.
How long does it take to grow a marijuana plant?
As the sun reaches up high in the sky, your cannabis will want to as well. Make sure all of your plants are outside by the Summer Solstice.
Important dates for growing marijuana outdoors
Be mindful to increase your watering as the plant develops. When it’s young, your plant will need water close to the stalk, but as it grows the roots will also grow outward, so start watering further away from the stalk in the soil so roots can stretch out and absorb water more efficiently.
Temperature: 68 to 78 degrees Fahrenheit. “A tool you should always have is a little temperature gauge,” Lipton said. “They call them hygrometers. They’re cheap and tell you both the temperature and the humidity.”
To harvest, many growers begin by removing the leaves of the cannabis plant with trim scissors, followed by the buds (using pruners). “We call this bucking,” Lipton said. “Gloves are also extremely important for sanitation reasons as well as to keep your hands from becoming sticky with the resin from the plant.”
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It’s important to remember that cultivating even one cannabis plant for personal consumption is felony on the federal level and punishable by up to five years in prison. Meanwhile, four US states — Alaska, Colorado, Washington D.C. and Oregon — have passed local amendments, allowing citizens who are 21 years old and over to grow a limited number of plants without fear of persecution.
Harvest and cure.
Even in our most progressive states, however, the law is far from simple. “In Colorado, it’s now county-specific,” Lipton said. “When the amendment first passed, they said you could grow six plants per person. But now, certain counties and municipalities have come out and said it’s just six per house — there’s no combining plant counts. That means you can have three vegetating and three flowering at any given time.”
A 2016 study by other scientists said that the earliest records for cannabis were mostly from China and Japan, but most botanists believe that it was probably first domesticated in the eastern part of Central Asia, where wild varieties of the plant are widespread.
As hemp’s function as a global source for textiles, food and oilseed dried up in the 20th century, the use of cannabis as a recreational drug increased, the new study noted. But there are still “large gaps” in knowledge about its domestication history, it said, in large part because the plant is illegal in many countries.
Although scientists can make some basic predictions about how a given plant species will diverge in nature, she added, such predictions “go out the window” when a natural selection process is driven by humans.
Here’s one to ponder: Where did the weed come from? No, not where it was bought, but where and when was the plant first domesticated?
The study’s authors found that the plant was a “primarily multipurpose crop” grown about 12,000 years ago during the early Neolithic period, probably for fiber and medicinal uses.