Walmart has Miracle-Gro Sphagnum Peat Moss, 8 qt. for $6.78. Shipping is usually free to Walmart+ members or on orders over $35.

About this product:

Grow stronger roots with Miracle-Gro® Sphagnum Peat Moss. Enriched with Miracle-Gro® Plant Food, the mix helps promote strong root development. Plus, its unique water-holding capabilities help plants require less watering. Use it in container plants and in-ground plants.