Comparison: Best Miracle Gro Organic Soil (Updated | Nov 11th)
But with so many options, how do you know which one truly delivers? We’ve dug into the bags, tested the textures, and watched what happens when seeds meet soil. Spoiler: not all “organic” labels are created equal. Let’s break down the top contenders so you can grow with confidence—no guesswork needed.
- Best for 2-month outdoor feed: Miracle-Gro Organic Outdoor Potting Mix
- Best for water-guard indoor: Miracle-Gro Organic Indoor Potting Mix
- Best for dual indoor pack: Miracle-Gro Organic Indoor Potting Mix
- Best for outdoor bundle boost: Miracle-Gro Organic Outdoor Potting Mix
- Best for big-volume outdoor: Miracle-Gro Organic Outdoor Potting Mix
- Best for premium organic mix: Miracle-Gro Performance Organics All Purpose Container Mix with Natural and Organic Ingredients
- Best for indoor bulk pack: Miracle-Gro Organic Indoor Potting Mix
- Best for peat-free raised: Miracle-Gro Organic Raised Bed & Garden Soil with Quick Release Natural Fertilizer
- Best for 6-month growth: Miracle-Gro Potting Mix
- Best for organic bounty mix: Miracle-Gro Performance Organics All Purpose Container Mix
Product Comparison: Best Miracle Gro Organic 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 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 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 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 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 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 Potting Mix, For Container Plants, Flowers, Vegetables, Annuals, Perennials, Shrubs, Feeds for up to 6 Months, 16. qt., 2-Pack
- Miracle-Gro Potting Mix feeds container plants for up to 6 months so you get more blooms for more color (vs. unfed plants)
- How to use: To use this potting medium, fill a container about 1/3 full with potting mix, place your plant in the soil, and fill the rest of the pot, pressing lightly
- What’s included: This bundles includes two 16 qt. bags of Miracle-Gro Potting Mix, each able to fill one 12-inch container (exact amounts may vary based on root ball size)
- Where to Use: Use this home gardening product with all types of container plants, including annual and perennial flowers, vegetables, herbs and shrubs
- This potting soil mix Grows Plants Twice As Big (vs. unfed plants)
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 are the key differences between the indoor and outdoor Miracle‑Gro organic potting mixes?
Indoor mixes contain sphagnum peat moss, coir, and a quick‑start natural fertilizer designed to protect against over‑ and under‑watering, while outdoor mixes use responsibly sourced peat and focus on feeding plants for up to two months in harsher conditions. The indoor formula is ideal for houseplants and seed starting, whereas the outdoor version is suited for flowers, vegetables, herbs, and perennials in containers exposed to the elements. Both provide a quick‑release nutrient boost, but the texture and water‑holding properties differ to match their intended environments.
How do the bundled bag options compare in value to single‑bag purchases?
Bundles typically include two 16‑qt. bags for outdoor mixes or two 8‑qt. bags for indoor mixes, offering a lower price per quart and reducing packaging waste. If you have multiple containers or plan to rotate crops, the larger total volume saves money and ensures you have a consistent medium throughout the growing season.
Is the raised‑bed soil truly peat‑free, and why might that matter?
Yes, the Miracle‑Gro Organic Raised Bed & Garden Soil is formulated with up‑cycled green waste and contains no peat, making it a more sustainable choice for gardeners concerned about peat harvesting. The peat‑free blend still delivers a quick‑release natural fertilizer that feeds plants for up to two months, so you get organic performance without compromising environmental stewardship.
Which product provides the longest nutrient release period?
The Performance Organics All Purpose Container Mix (both the 16‑qt. and the larger versions) feeds plants for up to three months, which is longer than the two‑month feed window of the standard organic indoor and outdoor mixes. This extended nutrition is beneficial for growers who want fewer re‑fertilizations over a full growing season.
How do I determine the right bag size for my container garden?
A 16‑qt. bag generally fills one 12‑inch pot, while a 25‑qt. bag can cover three 10‑inch containers, and two 8‑qt. bags are enough for two 8‑inch pots. Consider the number and size of your containers, plus any extra mix needed for top‑ups, to choose a size that minimizes leftovers.
Can the indoor organic mix be used for seed starting, and what steps should I follow?
Yes, the indoor mix is formulated for seed starting; fill a seed‑starting tray or small pot with the mix, follow the seed packet’s planting depth, and water gently until the soil is evenly moist. Because the mix includes a quick‑start fertilizer, seedlings receive an early nutrient boost without the risk of over‑watering.
What certifications should I look for to confirm a product is truly organic?
Look for the OMRI Listed label on the packaging, which indicates the mix meets organic standards accepted by the USDA. Both the Performance Organics All Purpose Container Mix and the standard organic indoor/outdoor mixes carry this certification, assuring you that the ingredients are approved for organic gardening.