sog means sea of green and scrog means screen of green. sog is more of a method of turn over. itsw when u have a couple of mother plants and every week you take clones and rotate the plants from growing to bloom so that every week you have a harvest. its based on many smaller harvest to make up for small plant size (typically you keep the plants small for faster turn over.) screen of green is a way of growing, its when u put up a screen horizontal across your grow tent, when your plants reach it, its will help to separate and control the canopy so that they can get as even as possible lighting across the whole canopy to help with yield. so no, no plant prep really, for sog just keep some mother plants and make a bunch of clones, and scrog you just let them grow and kinda work em with the screen ( by screen i mean its more like a fence or chicken wire)