Plant spacing for indoor grow

First time grower and I am getting ready to plant Super Lemon Haze Autoflower and need to know how far apart they need to be. Any help will be greatly appreciated.

Every plant is a different size, but 1.5ft in diameter is a general rule of thumb. Some people give more than others. This question really depends on the size of the plants, not allotted space to the plants. I’ve had plants take up half my tent before, it just depends on how many others are in the space.

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I veg mine for a long time so I’ve had 2 plants fill a 4x4. If I don’t veg that long, I can get 4 plants in the 4x4. But for autos, you don’t determine veg time… they do their own thing.