Espoma Organic Mushroom Compost .75 cu ft Sale! from $8.99 Qty. Add to Cart This item is currently on backorder but you can still purchase it now and we'll ship as soon as more become available. Mushroom Compost Helps Improve Poor Soils Better soil helps grow better plants Ideal for everything you plant Perfect for: Planting flowers Vegetables Trees & shrubs Ingredients: Blend of mushroom compost and aged forest products SKU: MC1