Grow a more bountiful harvest with Miracle-Gro Garden Soil Vegetables and Herbs! Enriched with a blend of compost, plant food, and other essential nutrients, each 1.5 cu. ft. bag will feed plants for up to 3 months. Use only with in-ground plants. You can grow bigger, more bountiful vegetables* thanks to the blend of essential nutrients that can increase the vegetable yield*. Plus, the Moisture Control technology protects against over and under watering.