Sure, it's called SOG (Sea of Green) growing style. Nine rooted clones per square foot in 4"x4" containers, straight to flowering light schedule (or at least "
soon to flowering"). I'll never do it again, but that's because I'm a lazy f*cker, lol, and favor sativas over indicas. But, yes, it's doable for sure. It's also "perpetual garden friendly," because you can just keep feeding it clones at the same rate you pull them out. Mother-in-a-box
.
Quicker than a single-plant SCROG, too, with comparable yields. And you can make it a variety-pack (but I wouldn't recommend doing so to a novice, due to likely height differences, flowering-period length differences, and nutritional requirement differences).
This kind of thing wasn't
terribly uncommon back when all cannabis grows were illegal cannabis grows.
In theory, you could do 16 per square foot, but I
really wouldn't recommend that. If for no other reason, it'd be that much easier to blow past the 99-plant threshold at which point the feds become interested. And how much would it suck to face federal charges over a bunch of buds on a stick?
It's not quite as dense in terms of plant spacing, but (approximately) four per square foot is also considered a SOG grow, and likely easier to manage. Many of you may have been members here long enough to have followed this journal when it was live:
Hello everyone, It's been a long time since I've ran a journal here. I just started a large SOG grow today so I've decided to journal it here for you. I have 3 Snow White(NLXCinderella99) mothers in my veg room along with a 50 site aero cloner. I just transplanted the first 16 rooted clones...
www.420magazine.com
Again, "How many can I fit in..." questions are largely meaningless. Are you the kind of anal-retentive OCD <BLEEP> who arranges the eggs in his refrigerator by weight? Then a SOG grow might be for you. Do you prefer ONE strain of cannabis and have enough skill to make it really unlikely that you'll end up killing a plant - and not mind a longer vegetative period? Then a single-plant SCROG could end up suiting you. Et cetera. You should try to grow cannabis in such a way that it doesn't become an onerous task, and via a method that won't end early because your plant - or plants - died.
Two more questions that aren't really answerable by themselves (but still get asked from time to time anyway) are:
What size light / how many lights do I need for <number of> plants?
How much will I yield?