Grodan Wholesale Case GRO-Blocks Plant Containers Hugo with Hole, 48 Count Gro-blocks are similar to a 'plant container' Plants can be fully grown in our gro-blocks Gro-block holes are the perfect size for any 1.5" Starter plug or macroplug The bases of the gro-blocks are grooved to promote drainage and to avoid "wet feet" Gro-blocks comes in strips labeled with instructions