Q - What size pots should be used to grow full-size indoor marijuana plants?
A – It depends on the amount of plants you want to grow per lamp and what lights you use. For a 600-watt HPS light you should use around 100 liters of soil (60 liters hydro). So if you want to grow in 11 liter pots, you should place 9 to 12 plants per lamp. And if you use 6 liter pots you should place between 16 to 20 plants and 4 to 5 25 liter pots per lamp…
Pots that confine the roots inhibit the growth of the marijuana plant itself. Marijuana plants in small pots will grow slower and smaller than plants in larger pots. In a small pot the amount of water and nutrients to the roots is limited by the small mass and must replenished often. Therefore marijuana plants in small pots require more attention.
If you see the tips of the roots sticking out the holes in the bottom of the pot, it’s fine. If large and long roots stick out of the bottom the roots need more space and the marijuana plant should be repotted
If you don’t repot the marijuana plant in the pictures above it will grow a little bigger but not much. If you repot it to an 11 liter pot it can grow huge...
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