Just curious, is this a rhetorical question, or do have something in mind?
So yes, it can be done, but know that your yeild will be less than if you gave them more root room. My winter indoor grow comprises of three gallon planters with 3 plants each. Thats just what i do for space reasons.
My outdoor grow last year was done in 3+ gallon planters, 7 of them. I had about 52 plants growing in them. After i culled the males i had about 25 plants in 6 containers. They were rootbound as hell and had to be watered every day heavily, but they produced about 2.5 lbs dry.
This is not companion planting, there is no synergistic relationship between the two, just competition for water and nutes.
Kayla has the space and container for a massive grow, but her lights will hold her back. She can expect as much as 9oz in good conditions, but bigger lights could yield her much more!
If you’re thinking about growing cannabis for the first time, you probably want to know what yields to expect. You don’t want to invest time and money if you won’t be happy with the results.
Grow tents are an easy way to create the perfect cannabis grow environment
This article covers how to estimate and improve yields based on your setup. However, you and your actions are ultimately the most important variables.
Here’s a 600W LED harvest (2 x Electric Sky 300 LEDs) in the same 4’x4′ tent, producing over a pound.
CFLs, T5s, and Other Fluorescent Lighting: 0.25-0.5g/watt
HPS, LED, LEC: 0.5-1g+/watt
When growing cannabis, a limiting factor is something that restricts the amount of bud you can harvest. For example, a couple of large plants could yield over a pound of weed with a high-yielding strain under a 600W LED light. But if you only grow one plant in a tiny Solo cup, the small size of the plant becomes a limiting factor because tiny plants can only produce a few ounces of weed even in perfect conditions.