That's a screen of green (ScroG) grow. He trained the plant under the screen for a while, then flowered it. That keeps the canopy on more or less the same level, which allows for more efficient use of lighting, and is particularly nice with lower wattage lamps which don't have much canopy-penetration power.
jamstigator Reviewed by jamstigator on . How do you do this? I was browsing through some of the pics on this site when I came across this picture here How in the world did this person do this?? I really want to try it out this season. Could someone give me detailed instructions? Rating: 5