Comparison: Best Organic Miracle Gro Soil (Updated | Nov 11th)
But with so many choices, how do you know which one delivers real results? We’ve dug into the details, tested the top contenders, and compared ingredients, performance, and value so you don’t have to. Whether you’re growing veggies, flowers, or herbs, we’ll help you find the perfect organic Miracle-Gro soil to make your garden thrive—naturally.
- Best for quick release outdoor: Miracle-Gro Organic Outdoor Potting Mix
- Best for water balance indoor: Miracle-Gro Organic Indoor Potting Mix
- Best for bulk outdoor pack: Miracle-Gro Organic Outdoor Potting Mix
- Best for dual indoor packs: Miracle-Gro Organic Indoor Potting Mix
- Best for bounty boost mix: Miracle-Gro Performance Organics All Purpose Container Mix with Natural and Organic Ingredients
- Best for large indoor supply: Miracle-Gro Organic Indoor Potting Mix
- Best for extra capacity outdoor: Miracle-Gro Organic Outdoor Potting Mix
- Best for peat-free raised: Miracle-Gro Organic Raised Bed & Garden Soil with Quick Release Natural Fertilizer
- Best for compact bounty mix: Miracle-Gro Performance Organics All Purpose Container Mix
- Best for family-size bounty: Miracle-Gro Performance Organics All Purpose Container Mix
Product Comparison: Best Organic Miracle Gro Soil
Miracle-Gro Organic Outdoor Potting Mix, for Outdoor Container Plants, Contains Quick-Release Natural Fertilizer, OMRI Listed, 16 qt.
- Miracle-Gro Organic Outdoor Potting Mix contains a quick-release natural fertilizer and also feeds plants for up to 2 months
- This potting mix is made with responsibly sourced peat (one hundred percent of peat sourced from certified producers)
- Use this organic potting mix with all types of outdoor container plants, including flowers, vegetables, herbs, annuals, and perennials
- To plant in pots, fill the container partially full with potting mix, place the plant in the pot after loosening the root ball, cover with more mix and water thoroughly
- One 16 qt. bag of Miracle-Gro Organic Outdoor Potting Mix fills one 12-inch container (amounts may vary based on the size of the root ball)
Miracle-Gro Organic Indoor Potting Mix, Protects Against Over and Under Watering, for Indoor Container Plants, Houseplants and Starter Plants, OMRI Listed, 16 qt.
- Miracle-Gro Organic Indoor Potting Mix protects indoor plants against over and under watering
- This organic container mix is made with responsibly sourced sphagnum peat moss (one hundred percent of peat sourced from certified producers), coir, and quick-start natural fertilizer
- Use this potting medium with all types of indoor container plants, including houseplants and herbs; also great for seed starting
- To plant seeds, fill container with potting mix, follow seed package planting directions, and water; To use with transplants, partially fill container, place plant after loosening the root ball, cover with more mix pressing lightly, and water
- One 16 qt. bag of Miracle-Gro Organic Indoor Potting Mix fills one 12-inch container (amounts may vary based on the size of the root ball)
Miracle-Gro Organic Outdoor Potting Mix, for Outdoor Container Plants, Contains Quick-Release Natural Fertilizer, OMRI Listed, 16 qt., 2-Pack
- Miracle-Gro Organic Outdoor Potting Mix contains a quick-release natural fertilizer and also feeds plants for up to 2 months
- This potting mix is made with responsibly sourced peat (one hundred percent of peat sourced from certified producers)
- Use this organic potting mix with all types of outdoor container plants, including flowers, vegetables, herbs, annuals, and perennials
- To plant in pots, fill the container partially full with potting mix, place the plant in the pot after loosening the root ball, cover with more mix and water thoroughly
- This bundle includes two 16 qt. bags of Miracle-Gro Organic Outdoor Potting Mix; each fills one 12-inch container (amounts may vary based on the size of the root ball)
Miracle-Gro Organic Indoor Potting Mix, Protects Against Over and Under Watering, for Indoor Container Plants, Houseplants and Starter Plants, OMRI Listed, 8 qt., 2-Pack
- Miracle-Gro Organic Indoor Potting Mix protects indoor plants against over and under watering
- This organic container mix is made with responsibly sourced sphagnum peat moss (one hundred percent of peat sourced from certified producers), coir, and quick-start natural fertilizer
- Use this potting medium with all types of indoor container plants, including houseplants and herbs; also great for seed starting
- To plant seeds, fill container with potting mix, follow seed package planting directions, and water; To use with transplants, partially fill container, place plant after loosening the root ball, cover with more mix pressing lightly, and water
- This bundle includes two 8 qt. bags of Miracle-Gro Organic Indoor Potting Mix; each bag fills two 8-inch containers (amounts may vary based on the size of the root ball)
Miracle-Gro Performance Organics All Purpose Container Mix with Natural and Organic Ingredients, Feeds Container Grown Vegetables, Flowers and Herbs for up to 3 Months, 1 cu. ft.
- Organic Goodness: Grow vibrant flowers, herbs, and veggies with Miracle-Gro Performance Organics All Purpose Container Mix made with organic and natural ingredients, like aged compost, for the spectacular results you expect
- Bountiful Harvests: Get twice the bounty versus unfed plants for more container-grown vegetables, flowers, and herbs
- How to Use: Perfect for all your indoor and outdoor container gardening, simply fill your favorite pots with this potting soil and watch your flowers, vegetables, and herbs thrive
- Nourish: This premium organic container soil provides continuous plant nutrition for up to 3 months, helping your potted plants flourish
- Trusted Results: Grow confidently with this OMRI Listed container mix that gives you the Miracle-Gro results you love with the organic and natural ingredients you want
Miracle-Gro Organic Indoor Potting Mix, Protects Against Over and Under Watering, for Indoor Container Plants, Houseplants and Starter Plants, OMRI Listed, 16 qt., 2-Pack
- Miracle-Gro Organic Indoor Potting Mix protects indoor plants against over and under watering
- This organic container mix is made with responsibly sourced sphagnum peat moss (one hundred percent of peat sourced from certified producers), coir, and quick-start natural fertilizer
- Use this potting medium with all types of indoor container plants, including houseplants and herbs; also great for seed starting
- To plant seeds, fill container with potting mix, follow seed package planting directions, and water; To use with transplants, partially fill container, place plant after loosening the root ball, cover with more mix pressing lightly, and water
- This bundle includes two 16 qt. bags of Miracle-Gro Organic Indoor Potting Mix; each bag fills one 12-inch container (amounts may vary based on the size of the root ball)
Miracle-Gro Organic Outdoor Potting Mix, for Outdoor Container Plants, Contains Quick-Release Natural Fertilizer, OMRI Listed, 25 qt.
- Miracle-Gro Organic Outdoor Potting Mix contains a quick-release natural fertilizer and also feeds plants for up to 2 months
- This potting mix is made with responsibly sourced peat (one hundred percent of peat sourced from certified producers)
- Use this organic potting mix with all types of outdoor container plants, including flowers, vegetables, herbs, annuals, and perennials
- To plant in pots, fill the container partially full with potting mix, place the plant in the pot after loosening the root ball, cover with more mix and water thoroughly
- One 25 qt. bag of Miracle-Gro Organic Outdoor Potting Mix fills three 10-inch containers (amount may vary based on the size of the root ball)
Miracle-Gro Organic Raised Bed & Garden Soil with Quick Release Natural Fertilizer, Peat Free, 1 cu. ft., 2-Pack
- Miracle-Gro Organic Raised Bed & Garden Soil is a soil blend with quick release natural fertilizer
- Feeds plants for up to 2 months
- This organic soil blend is peat free and formulated with upcycled green waste
- Successful Organic Gardening Made Attainable
- This bundle includes two 1 cu. Ft. bags of Miracle-Gro Organic Raised Bed & Garden Soil
Miracle-Gro Performance Organics All Purpose Container Mix, 6 qt. – Organic, All Natural Plant Soil – Feed for up to 3 Months – All-Purpose Formula for Vegetables, Flowers and Herbs
- Container mix feeds your indoor and outdoor container plants all season (up to 3 months)
- Miracle-Gro Performance Organics All Purpose Container Mix delivers twice the bounty – more vegetables, flowers and herbs – with organic and natural ingredients (vs unfed plants)
- An all purpose formula for indoor and outdoor container gardening
- Blended with aged compost
- Enjoy Miracle-Gro results with organic and natural ingredients; OMRI Listed for organic use
Miracle-Gro Performance Organics All Purpose Container Mix, 16 qt. – Organic, All Natural Plant Soil – Feed for up to 3 Months – All-Purpose Formula for Vegetables, Flowers and Herbs
- Organic container mix feeds your indoor and outdoor container plants all season (up to 3 months)
- Miracle-Gro Performance Organics All Purpose Container Mix delivers twice the bounty – more vegetables, flowers and herbs – with organic and natural ingredients (vs unfed plants) Screen reader support enabled.
- An all purpose formula give indoor and outdoor container plants a great boost Screen reader support enabled.
- Blended with aged compost
- Enjoy Miracle-Gro results with organic and natural ingredients; OMRI Listed for organic use
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon.com at the time of purchase will apply to the purchase of this product.
Buying Guide
FAQs
What’s the main difference between Miracle‑Gro Organic Indoor and Outdoor Potting Mixes?
The Indoor mix contains sphagnum peat moss, coir, and a quick‑start natural fertilizer designed to balance moisture for houseplants, while the Outdoor mix uses responsibly sourced peat and a quick‑release fertilizer suited for harsher, variable weather conditions. Both provide up to two months of feeding, but the Indoor formula also helps prevent over‑ and under‑watering, which is crucial for confined indoor containers.
Which product should I choose for a raised‑bed garden?
Miracle‑Gro Organic Raised Bed & Garden Soil is the best fit because it’s peat‑free, made from upcycled green waste, and includes a quick‑release natural fertilizer that feeds plants for up to two months. The blend is formulated specifically for in‑ground beds, offering better structure and nutrient retention than standard container mixes.
How do the bundle options compare to single‑bag purchases?
Bundle packs, such as the two‑bag Outdoor mix (2 × 16 qt.) or the two‑bag Indoor mix (2 × 8 qt.), provide better value per cubic foot and ensure you have enough soil for multiple containers or larger projects. Single bags are convenient for one‑off pots, but bundles reduce packaging waste and often cost less per unit.
Is there a noticeable performance boost with Miracle‑Gro Performance Organics mixes?
Performance Organics mixes use aged compost and are OMRI‑listed, delivering up to three months of continuous nutrition and claiming up to twice the bounty compared with unfed plants. They work for both indoor and outdoor containers, offering a more robust nutrient profile than the basic Organic mixes, which focus mainly on quick‑release fertilizer.
What size bag should I buy for a 12‑inch pot?
A 16 qt. bag of either the Indoor or Outdoor Organic mix typically fills one 12‑inch container, though actual volume can vary with root ball size. If you plan to pot multiple 12‑inch containers, consider a bundle or the larger 25 qt. Outdoor bag, which can cover three 10‑inch pots, providing extra flexibility.
Can I use the Indoor mix for seed starting?
Yes, the Indoor mix is formulated for seed starting as well as transplants, offering a sterile, well‑draining medium that retains enough moisture for germination without becoming waterlogged. Its coir component helps maintain consistent moisture, which is essential for delicate seedlings.
Is the peat in these mixes sustainably sourced?
All listed Miracle‑Gro Organic mixes state that 100 % of the peat is sourced from certified producers, ensuring responsible harvesting practices. The Raised Bed soil is peat‑free, using upcycled green waste, which further reduces environmental impact.
How long will the natural fertilizer feed my plants?
The quick‑release natural fertilizer in the Organic Indoor and Outdoor mixes provides nutrients for up to two months, while the Performance Organics mixes extend feeding to about three months. After this period, you may need to supplement with additional organic fertilizer for continued growth.