Soil Blockers are a great way to start seeds without using a pot. Soil block makers are sold in basically three sizes–a 3/4" mini block (for small seeds), a 2" medium block and a 4" large block. You can use all three and move up from the mini block to the medium block and finally the large block, or the 2" medium block will work for most seeds. We have a great video on how to make the soil blockers using our Quickroot seed starting mix. If you want to make your own soil blocker mix, check out our article How to Make a Soil Mix for Your Soil Blocks.