What is potting up? Potting up is the process of moving seedlings to larger pots or seedling trays once they have formed two sets of true leaves. Here are some crops that benefit from being potted up when starting seeds indoors ⬇️ Broccoli Cabbage Cauliflower Kale Eggplant Tomatoes Peppers Happy planting! zone4gardening midwestgarden startingseedsindoors startingseeds seeds organicgardening organicgardener