G-RexG Rexcustom blended in Northern California, never dried or dehydrated! G Rex is formulated to be used throughout the entire growth cycle. It will continue to work from the rooted cutting stage all the way until harvest. When making cuttings, add G Rex as soon as a callous forms at the base of the cutting. For example, when you set up a tray of rockwool or oasis cubes water with Hum tea, wait seven days and then water in G Rex. After transplant