Miracle-Gro Expand 'n Gro Concentrated Planting Mix – Expands Up to 3X with Water, For Containers & In-Ground

Grow your garden with Miracle-Gro Expand 'n Gro Concentrated Planting Mix. This soil substitute expands up to 3X when you add water, and it includes fertilizer to feed plants for up to 6 months. Use it as a premium potting mix for container plants or as a soil amendment to refresh in-ground beds. The result is a lighter, more breathable growing medium that still supports steady growth as plants establish.

Key benefits

• Expands up to 3X when combined with water
• Feeds plants for up to 6 months
• Natural fibers hold up to 50% more water than standard potting mix
• In-ground soil is up to 40% lighter and offers up to 90% more air space for roots
• One .33 cu ft bag fills two 12-inch containers or covers four square feet in-ground

How to use

• Container: fill about 1/3 full, gradually add water, stir, and wait for full expansion before planting
• Garden: spread a 1 inch layer over the area, then mix with the top 4-6 inches of soil before planting; water thoroughly

Beyond expansion and feeding, Expand 'n Gro helps create a soil structure that supports easier planting and ongoing moisture management. It suits a range of plant types, from herbs and vegetables to flowering perennials, making it a versatile option for busy gardeners who value consistency and simplicity.

Package specifics: One .33 cu ft bag fills two 12-inch containers or covers about four square feet of garden area when used as a soil amendment. This versatility makes it a convenient choice for balcony setups, raised beds, or test plots.

Expansion and texture notes

The mix blends well with water to create a looser, more aerated root zone. Its moisture-holding fibers can help you balance watering schedules, especially in warm months or dry spells. Expect a cleaner, more workable soil profile during plant transitions.