MICRO BLOCK RECIPE Use this recipe to make 3/4″ Micro blocks for starting small seeds. INGREDIENTS1 gallon peat (50/50 peatmoss/cocopeat or cocopith/fiber)¼ cup colloidal phosphate (soft rock phosphate)¼ cup glacial rock dust¼ cup greensand1 quart well decomposed compostINSTRUCTIONSScreen the peat to 1/8 to 1/4″ prior to measuring.Mix together the phosphate, glacial rock dust and greensand.Add to the screened peat and mix together thoroughly.TO MAKE THE BLOCKSUse about 1 cup of this mix with about 1/4-1/3 cup water to make each 20-block section.Let the mixture soak about a half hour prior to making the blocks.Place 1-2 seeds on top of each block.Sprinkle a small amount of dry mixture on top.Don’t water these the first day unless necessary.Keep moist but not wet. Laurie October 15, 2026 9:42 am