Vertical Growing is still new to cannabis growers but after doing some research I think it could quadrouble some one yield compared to a flat garden of the same square footage and also takes advantage of lumens by not using reflectors and rather having the light hit the side of the plant instead of the canopy.
There are a few commercial systems out there for vertcal gradens...
Coliseum 300 Plant Growing System Maxi (5x600w) / Vertical Growing Complete Grow Kits / Vertical Growing Systems / AquaCulture Hydroponics
The cannabis cage
OmegaGarden.com - Omega Gardens™: Industry Leading Hydroponics Designs for Indoor Gardening
Colseum: 73 cubic feet
Grow Cube: 81 cubic feet
Cannabis Cage: 32 cubic feet
Omega Garden: 24 cubic feet
Flat Garden: 13 cubic feet
Average yield should be 0.1 pound per cubic foot
Coliseum: 7.3 pounds (1600w)
Grow Cube: 8.1 pounds (2000w)
Cannabis Cage: 3.2 pounds (1000w)
Omega Garden: 2.4 pounds (1200w)
Flat Garden: 1.3 pounds (1000w)
The math shows that vertical systems produce a hgher yield per cubic/square footage but even though you could get 8.1 pounds compared to 1.3 pounds I feel that f I were to design my own system I could produce a much higher yield.
The commercial vertical systems are not sticking to the SOG rule to 4 plants per square foot.
Coliseum is 7 feet tall and 6 foot diameter ... the suraface area of the sides of the coliseum equal 131.88
Circumference: 18.84ft x Height: 7 ft. = surface area of 131.88 ft.
131.88 x 4 plants per square foot = 527.52 plants
The coliseum is maxing out at 300 plant stes and at the optimal ounce per plant rule should be producng 18.75 pounds
If maxed out it could possibly be producing 32.97 pounds in under 6 square feet of space!
Ovbiosly this couldnt work becuase to fit 527 plant sites the plants would have to be completly horizontal but I will be makng up a desgn and posting it later designing something simaler to the coliseum but sticking to the 4 plants per square foot rule. I believe from the rough sketch I drew and the math I did I could fit around 500 plants in 6 square feet of space and produce over 30 pounds
There are also some problems to go with this ... at 131 square feet I should need a ton of light.
40w per square foot x 131 ft. = 5240w
5240w in such a small space could cuase some problems ... there are some solutions such as strechting the diameter, use of fans, and water cooled lights but first I want to get a solid design down. I just wanted to share my thoughts first and get some input.