The 6”x6”x4” block from GROW!T Commercial Coco is the most versatile size in the lineup. Growers can use the blocks for vegetative growth for plants going into larger containers, or they can be used for flowering by stacking the GMGP443 on top of this GMGP664. Another approach is to veg and bloom plants only in this 6”x6”x4” block, using modern automated fertigation methods. RapidRIZE blocks start off compressed for easy shipping and storage, but they expand fully in approximately 1 minute after saturation. All RapidRIZE blocks feature a wide, low-profile shape, to match the specific rooting pattern of your favorite herbaceous annual plants.