S.O.G. stands for Sea Of Green, which is simply using a lot of little plants to fill the canopy rather than a couple of larger plants.
What are Autoflowers?
Autoflowering cannabis is a small hybrid type of cannabis that begins flowering without being dependent upon changes in the light cycle. They have a faster growth cycle than photoperiod cannabis, they are smaller, they generally require less maintenance, and they can produce a decent yield.
Autoflowers are a great place to start for beginners because they require a lot less maintenance than photoperiod cannabis. You can grow an autoflower from a seedling to a flowering plant on an 18/6 day/night cycle (or even 24/0!), they grow quicker (as fast as 8 weeks), they’re compact so you can fit them in small spaces, and they require less nutrients (because they’re smaller).
Check out this link for more information on Autoflowers!