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marijuanas plants

If you’re growing weed indoors, you can grow whenever you like. Keep in mind that the outside environment will affect your grow space—you may need to add heaters in the winter or fans and ACs in the summer. Other than that, you can start seeds whenever you like and flip them into flower whenever you like, depending on how big you want the plants.

Vegetative stage length: 3-16 weeks

When should you grow marijuana?

Once your seed has germinated, or sprouted, it’s ready to be placed in a growing medium, like soil. The tap root will drive down while the stem of the seedling will grow upward.

As roots develop, the stalk will rise and you’ll begin to see the first iconic fan leaves grow, at which point your cannabis plant can be considered a seedling.

The growth stages of marijuana can be broken down into four primary stages from seed to harvest:

Morphological differences in wild and cultivated forms of cannabis have introduced taxonomic uncertainties. Hence, in addition to C. sativa, some scientists consider the genus as including a second species, C. indica, and even a third, C. ruderalis. These two species are also sometimes treated as subspecies of C. sativa.

Cannabis, (genus Cannabis), genus of medicinal, recreational, and fibre plants belonging to the family Cannabaceae. By some classifications, the genus Cannabis comprises a single species, hemp (Cannabis sativa), a stout, aromatic, erect annual herb that originated in Central Asia and is now cultivated worldwide. A tall canelike variety is raised for the production of hemp fibre, while the female plants of a short branchier variety are prized as the more abundant source of the psychoactive substance tetrahydrocannabinol (THC), the active ingredient of marijuana. See also medical cannabis.

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The Editors of Encyclopaedia Britannica This article was most recently revised and updated by Barbara A. Schreiber.