These peat pellets are perfect for growing tomatoes from seed. Simply add water and the pellets swell up to seven times their original size, forming a self-contained "pot" of growing medium for baby seedlings. The porous peat allows for optimal air circulation around roots as they emerge, giving seedlings a strong start. Once the seedlings are ready, they transplant out easily from the pellets, giving you healthy tomato plants for your garden. The weed-free Canadian sphagnum peat ensures pure growing conditions for your tomato seeds.