– Soil blockers – standard and/or mini sizes, plus mini inserts if needed – Seeds – A tub for mixing your seed-starting mixture – Seed starting mixture or the ingredients to make your own mix (peat or coconut coir, compost, perlite, and seed starting mix) – Water – Tub with water (for rinsing off your soil blocker) – Seed starting trays or other flat, plastic trays (for holding your soil blocks)