Comparison: Best All Natural Potting Mix (Updated | Nov 11th)
But with so many brands claiming to be the “best,” how do you know which one actually delivers? We’ve dug into the ingredients, tested performance, and compared value to bring you honest insights on the top all-natural potting mixes out there—so you can grow with confidence and let your plants thrive the way nature intended.
- Best for quick-release fertilizer: Miracle-Gro Organic Outdoor Potting Mix
- Best for peat-free eco blend: Back to the Roots 100% Organic Potting Mix (Value 12 Quart) | Premium Blend | Made in The USA
- Best for indoor mycorrhiza boost: Back to the Roots 100% Organic Indoor Potting Mix (Value 12 Quart) | Promotes Healthy Houseplant Growth| Made in The USA
- Best for pure organic mix: Natural & Organic Potting Mix
- Best for watering guard mix: Miracle-Gro Organic Indoor Potting Mix
- Best for rich natural blend: Espoma Organic Potting Soil Mix – All Natural Potting Mix For All Indoor & Outdoor Containers Including Herbs & Vegetables. For Organic Gardening
- Best for large-scale outdoor: Miracle-Gro Organic Outdoor Potting Mix
- Best for nutrient-rich all-purpose: LGM Soil All-Purpose Potting Soil Mix – Organic Houseplant Soil – Natural Potting Mix for Indoor & Outdoor Plants – Potting Soil for Gardening – Ideal for Rooting Cuts & Germinating Seeds (0.5 Cu Ft)
- Best for value bundle pack: Miracle-Gro Organic Outdoor Potting Mix
Product Comparison: Best All Natural Potting 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)
Back to the Roots 100% Organic Potting Mix (Value 12 Quart) | Premium Blend | Made in The USA
- 100% Organic and Peat-Free: Our potting mix is 100% organic and peat-free—made from upcycled plant matter and wood fines from across the U.S. No imported peat, just better soil with a lighter carbon footprint.
- All-Purpose: Our premium potting mix is versatile and well-suited for herbs, veggies, fruits, and flowers. It caters to all your gardening needs, and is proudly made in the USA.
- Better Moisture Control and pH Balance: Our premium soil blend incorporates yucca extract for moisture control and dolomitic limestone for pH balancing.
- 100% Satisfaction Guarantee: Not satisfied? Let us know. Our support team will get you growing with a replacement or refund—no questions asked.
- GROWONEGIVEONE — Share a photo of your growing garden and we’ll donate a Kids Grow Kit and STEM elementary school curriculum to a classroom of your choice.
Back to the Roots 100% Organic Indoor Potting Mix (Value 12 Quart) | Promotes Healthy Houseplant Growth| Made in The USA
- FORMULATED FOR INDOOR USE: Our Potting Mix contains organic yucca extract that aids in retaining moisture in the soil whichs keeps your indoor plants happy and healthy
- ROOT-BOOSTING MYCORRHIZAE: This beneficial soil component provides your plants with a natural, organic way to boost their root development and nutrient uptake
- ORGANIC AND PEAT-FREE: Our indoor potting mix helps reduce greenhouse emissions and environmental impact, making it a responsible choice for conscious consumers
- BALANCING DOLOMITIC LIMESTONE: Balances the alkalinity and acidity levels of the soil, which ensures that your plants receive the necessary nutrients from the potting mix to grow healthy and strong
- SAFE FOR PETS AND PEOPLE: Made without bark or compost, this potting mix is less prone to indoor gnats and pests, making it a worry-free option for your indoor gardening needs
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)
Espoma Organic Potting Soil Mix – All Natural Potting Mix For All Indoor & Outdoor Containers Including Herbs & Vegetables. For Organic Gardening, 8qt. bag. Pack of 1
- FOR USE ON: Not just an indoor potting soil, this can also be used as a potting soil for outdoor plants and is a great soil mix for vegetables, herbs & all other container plants & flowers.
- CONTAINS: This organic soil for plants & vegetables is a rich blend of sphagnum peat moss, humus & perlite enriched with earthworm castings, alfalfa meal, kelp meal & feather meal
- MYCO-TONE: A proprietary blend of endo & ecto mycorrhizae.
- WHEN TO USE: Any time planting containers, whether starting a new plant or transplanting into a larger container. Plants require regular re-potting and fresh planting soil for optimum growth
- ORGANIC GARDENING: Contains a rich blend of only the finest natural ingredients. No synthetic plant foods or chemicals are used.
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)
LGM Soil All-Purpose Potting Soil Mix – Organic Houseplant Soil – Natural Potting Mix for Indoor & Outdoor Plants – Potting Soil for Gardening – Ideal for Rooting Cuts & Germinating Seeds (0.5 Cu Ft)
- ALL-NATURAL INGREDIENTS: LGM Soil All-Purpose Potting Soil Mix is crafted from composted forest products, wood fines, perlite, sphagnum peat moss, and a mix of beneficial microbes, providing optimal nutrition for indoor and outdoor plants, including houseplants, vegetables, and herbs.
- VERSATILE USE: This premium potting soil mix is ideal for both indoor and outdoor gardening. Whether you’re planting flowers, shrubs, or trees, rooting cuts, or germinating seeds, LGM Soil provides an ideal growing medium for all types of plants and garden soil for outdoor plants.
- PROMOTES HEALTHY GROWTH: The inclusion of chicken manure, volcanic ash, gypsum, feather meal, soy meal, and kelp meal in LGM Soil ensures strong root development and robust plant health. Ideal for indoor plant soil, potting soil for indoor plants, and outdoor potting soil for flowers and vegetables.
- RETAINS MOISTURE: LGM Soil’s unique blend conserves water by reducing moisture loss due to evaporation, making it an excellent choice for indoor potting soil for house plants, indoor plant soil, & outdoor potted plants. Your plants stay hydrated longer, reducing the need for frequent watering.
- READY TO USE: This all-purpose potting soil is pre-moistened and ready to use straight out of the bag. It comes in a convenient small bag size, making it easy to handle and ideal for potting soil indoor plants small bag needs, as well as for indoor and outdoor gardening, from houseplants to vegetables.
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)
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 should I consider when choosing an all‑natural potting mix for indoor vs. outdoor use?
First, check whether the mix is formulated for indoor or outdoor conditions, as moisture retention and fertilizer needs differ. Look for ingredients like peat, coir, or wood fines that affect drainage and aeration. Also verify if the product includes added nutrients or mycorrhizae that can benefit specific plant types.
How do the Miracle‑Gro Organic Outdoor mixes differ in bag size and coverage?
The 16‑qt. bag fills roughly one 12‑inch container, while the 25‑qt. bag can fill three 10‑inch containers, giving you more volume per purchase. Both contain a quick‑release natural fertilizer that feeds for up to two months, but the larger bag offers better value if you have many containers.
Which product offers the most environmentally friendly formulation?
Back to the Roots 100 % Organic mixes are peat‑free and made from upcycled plant matter and wood fines, resulting in a lighter carbon footprint. Their indoor and outdoor versions also include yucca extract for moisture control, reducing the need for frequent watering. This makes them the most eco‑conscious choice among the listed options.
What are the benefits of mycorrhizae in the Back to the Roots indoor mix compared to other mixes?
The indoor mix contains root‑boosting mycorrhizae that enhance nutrient uptake and improve root development, especially for houseplants. While Espoma and LGM Soil also include beneficial microbes, the specific mycorrhizal blend in Back to the Roots is highlighted for indoor use and can reduce pest issues like gnats. This can lead to healthier, faster‑growing indoor plants.
How does LGM Soil’s nutrient blend compare to Espoma’s organic mix?
LGM Soil combines chicken manure, volcanic ash, kelp meal, and other organic amendments for a broad spectrum of nutrients, whereas Espoma relies on peat, humus, and earthworm castings with added alfalfa, kelp, and feather meals. LGM’s formula is designed for both indoor and outdoor versatility and emphasizes moisture retention, while Espoma focuses on a classic organic blend with mycorrhizae. Both are natural, but LGM provides a richer mix of macro‑ and micronutrients.
Is there a noticeable price‑to‑value advantage among the peat‑free options?
Back to the Roots offers 12‑quart bags at a competitive price and includes a satisfaction guarantee, making it a strong value proposition. LGM Soil’s smaller, pre‑moistened bags may cost slightly more per quart but provide convenience and a comprehensive nutrient package. Overall, the peat‑free mixes give good value, especially when you factor in environmental benefits and reduced need for supplemental fertilizers.
Which potting mix provides the longest fertilizer feed period?
Both Miracle‑Gro Organic Outdoor mixes contain a quick‑release natural fertilizer that feeds plants for up to two months. The indoor mix from Miracle‑Gro also offers similar feeding duration but is tailored for indoor watering cycles. If a longer feed period is a priority, the outdoor version’s larger bag can sustain multiple containers for the full two‑month window.
How important is pre‑moistening and ready‑to‑use convenience for beginners?
Pre‑moistened mixes like LGM Soil eliminate the guesswork of adding water before planting, which helps new gardeners avoid over‑ or under‑watering. Ready‑to‑use products also reduce preparation time and ensure consistent moisture levels, leading to healthier seedlings. For beginners, this convenience can be a decisive factor when selecting a potting mix.