The 8”x8”x6” block from GROW!T Commercial Coco is an excellent grow block for large flowering plants. Smaller blocks can be stacked on top or planted down into the coco coir. Another approach is to veg and bloom plants only in this 8”x8”6” 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.