SCROG, or screen of green, is a training method in which a horizontal net or screen is set above the pots, usually 20-30 cm (8-12 in) above the medium, and shoots are tucked under it as they grow through. The canopy spreads sideways to fill the screen, giving a flat, even layer of tops close to the same light intensity.
In practice
A SCROG uses few plants, often one to four per square metre, and longer veg: the grower flips to flower when the screen is about 60-80% full, since the stretch fills the rest. Tuck daily during late veg and the first two to three weeks of flower, then let tops grow up through the screen. Remove or tuck weak growth beneath the screen, which gets little light.
SCROG pairs well with topping or mainlining and suits plant-count-limited home growers.
Don't confuse with
- SOG: many small plants, little or no veg, one main cola each.
- Trellis netting: the same net can be used for support only, without SCROG tucking.
Top shelf is the highest price tier of flower in a shop, used as slang for any premium-looking cannabis; it reflects pricing and appearance, not verified quality.The stretch is the rapid increase in height in the first two to three weeks after switching to flower, when many cultivars grow 1.5 to 3 times taller.SOG (sea of green) grows many small plants at high density with little or no veg time, each making one main cola, to shorten the cycle.The dense, elongated cluster of flowers that forms at the end of a stem or branch; the main cola tops the leader.A trellis is a net, mesh or frame that supports plants and spreads their branches, either as a SCROG screen or as support for heavy colas in flower.LST (low-stress training) bends and ties stems so the plant grows wide and flat, exposing more bud sites to light without cutting or breaking tissue.Tucking is moving fan leaves and shoots behind or under others, or beneath a screen, so bud sites get light without removing any leaf area.An even canopy is one where all main tops sit at roughly the same height, so each receives similar light intensity and buds develop more uniformly.
