Hi my name is "Alisa" when I used soil in the passed. the roots were weak and transferring my seeds into larger pots would shocked the plants and I lost a lot of hard work. I never know another planting medium before. I am just learning about growing plants this way! I just wanted to learn more and start A conversation about it. I planted 30 seeds with this method all my seeds are plants now! I just liked how healthy the plants are too! I get my growing supplies at Grow World a indoor Garden supply store. It's a little different than a retail garden supply store!