Actually if you time it right using Autos, you can pretty much set it up to have as many harvests as you want. Since you can run your lights at 18/6 or 20/4 the entire time, you can have plants at different stages under the same lights. So if you have room for 12 2 Gallon Pots, start 4 each every thirty days and have a constant plant, grow then harvest. You may be able to have up to 15 pulls a year of 4 plants each... 60 plants a year!