Comparison: Best Miracle Gro Organic Mix (Updated | Nov 11th)
We’ve dug into the dirt (literally) to compare the top contenders, testing for texture, nutrients, and plant performance. Whether you’re growing veggies, flowers, or container gardens, we’ll help you find the perfect organic mix that makes your garden thrive—naturally and effortlessly.
- Best for quick-release outdoor: Miracle-Gro Organic Outdoor Potting Mix
- Best for water-guard indoor: Miracle-Gro Organic Indoor Potting Mix
- Best for indoor mix bundle: Miracle-Gro Organic Indoor Potting Mix
- Best for outdoor mix duo: Miracle-Gro Organic Outdoor Potting Mix
- Best for compact indoor pack: Miracle-Gro Organic Indoor Potting Mix
- Best for large-scale outdoor: Miracle-Gro Organic Outdoor Potting Mix
- Best for three-month bounty: Miracle-Gro Performance Organics All Purpose Container Mix with Natural and Organic Ingredients
- Best for all-season organics: Miracle-Gro Performance Organics All Purpose Container Mix
- Best for mini organics mix: Miracle-Gro Performance Organics All Purpose Container Mix
- Best for six-month boost: Miracle-Gro Potting Mix
Product Comparison: Best Miracle Gro Organic Mix
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, 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, 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 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 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
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 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)
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
How do I choose between the indoor and outdoor organic potting mixes?
Indoor mixes contain a blend of sphagnum peat moss, coir, and a quick‑start natural fertilizer that helps regulate moisture for houseplants and seed starting. Outdoor mixes use responsibly sourced peat and a quick‑release fertilizer designed for the harsher conditions of garden containers, vegetables, and perennials. Select the mix that matches the environment where you’ll be growing your plants.
What are the benefits of the quick‑release natural fertilizer included in the organic mixes?
The quick‑release fertilizer supplies nutrients immediately after planting, promoting strong root development and faster growth. It also feeds plants for up to two months (outdoor) or three months (Performance Organics), reducing the need for frequent top‑ups. Because it’s organic, it breaks down slowly, improving soil structure over time.
Is there a cost advantage to buying bundled bags versus single bags?
Bundled packages typically lower the per‑quart price and reduce shipping costs, making them a better value for larger gardens. For example, a two‑bag bundle of the indoor mix provides twice the volume for roughly the price of a single bag plus a discount. If you only need a small amount, a single 8‑qt bag may be more economical.
How does Miracle‑Gro Performance Organics All Purpose Container Mix differ from the standard organic indoor/outdoor mixes?
Performance Organics uses aged compost and other natural ingredients to deliver continuous nutrition for up to three months, whereas the standard organic mixes focus on peat‑based blends with quick‑release fertilizer. It is OMRI‑listed for organic gardening and promises up to twice the harvest compared with unfed plants. The all‑purpose formula works for both indoor and outdoor containers, offering more versatility.
Which mix provides the longest feeding period for my plants?
The Performance Organics All Purpose Container Mix advertises up to three months of continuous nutrition, which is longer than the two‑month feeding window of the organic outdoor mix. The indoor organic mix also offers up to three months, but its primary advantage is moisture regulation for houseplants. Choose the product that aligns with how often you plan to fertilize.
Are the peat sources sustainable and what does “certified” mean?
All the organic mixes state that 100 % of the peat is sourced from certified producers, meaning the peat comes from responsibly managed peatlands that meet environmental standards. Certification helps ensure minimal impact on ecosystems and supports peatland restoration efforts. This gives shoppers confidence that the product is both effective and eco‑friendly.
Can I use the indoor mix for seed starting and the outdoor mix for vegetables?
Yes, the indoor organic mix is formulated for seed starting, offering a light texture and consistent moisture that encourages germination. The outdoor organic mix is ideal for vegetable gardening because it contains a quick‑release fertilizer that supports rapid growth in larger containers. Using each mix in its intended setting maximizes plant health and yield.
How do I determine the right bag size for my container garden?
A 16‑qt bag typically fills one 12‑inch container, while a 25‑qt bag can fill three 10‑inch containers, giving you a quick reference for volume needs. For smaller pots, consider the 8‑qt bags, which are enough for two 8‑inch containers each. Match the total container surface area you plan to fill with the combined capacity of the bags you purchase.