Comparison: Best Kellogg Organic Potting Soil Mix (Updated | Nov 11th)
But with so many options out there, how do you know which one truly delivers? We’ve dug deep—literally—testing and comparing top Kellogg blends to see which one gives your flowers, veggies, and containers the perfect foundation. From texture to nutrient content, we’ll break it down in plain terms so you can grow with confidence. Let’s find your garden’s perfect match.
Editor’s Choice
Best for a specific purpose
- Best for peat-free premium: Back to the Roots 100% Organic Potting Mix (Value 12 Quart) | Premium Blend | Made in The USA
- Best for two-month feed: Miracle-Gro Organic Outdoor Potting Mix
- Best for water balance: Miracle-Gro Organic Indoor Potting Mix
- Best for mycorrhizae boost: Back to the Roots 100% Organic Indoor Potting Mix (Value 12 Quart) | Promotes Healthy Houseplant Growth| Made in The USA
- Best for earthworm enriched: Espoma Organic Potting Soil Mix – All Natural Potting Mix For All Indoor & Outdoor Containers Including Herbs & Vegetables. For Organic Gardening
- Best for bundle value: Miracle-Gro Organic Outdoor Potting Mix
- Best for big volume: Miracle-Gro Organic Outdoor Potting Mix
- Best for expandable coco: WONDER SOIL Organic Potting Soil | Ready to Plant Coco Coir Fully Loaded with Nutrients | 3 LBS Bag Expands to 12 Quarts of Indoor Outdoor Soil for Gardens & Plants | Incl Worm Castings
- Best for indoor bundle: Miracle-Gro Organic Indoor Potting Mix
- Best for biochar power: Wakefield Premium Biochar Blend – Organic Potting Soil for Vegetables
Product Comparison: Best Kellogg Organic Potting Soil Mix
Peat-Free Premium
Back to the Roots 100% Organic Potting Mix (Value 12 Quart) | Premium Blend | Made in The USA
Back to the Roots
- 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.
Two-Month Feed
Miracle-Gro Organic Outdoor Potting Mix, for Outdoor Container Plants, Contains Quick-Release Natural Fertilizer, OMRI Listed, 16 qt.
Miracle-Gro
- 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)
Water Balance
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
- 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)
Mycorrhizae Boost
Back to the Roots 100% Organic Indoor Potting Mix (Value 12 Quart) | Promotes Healthy Houseplant Growth| Made in The USA
Back to the Roots
- 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
Earthworm Enriched
Espoma Organic Potting Soil Mix – All Natural Potting Mix For All Indoor & Outdoor Containers Including Herbs & Vegetables. For Organic Gardening, 2 Cubic Foot bag. Pack of1
Espoma
- 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.
Bundle Value
Miracle-Gro Organic Outdoor Potting Mix, for Outdoor Container Plants, Contains Quick-Release Natural Fertilizer, OMRI Listed, 16 qt., 2-Pack
Miracle-Gro
- 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)
Big Volume
Miracle-Gro Organic Outdoor Potting Mix, for Outdoor Container Plants, Contains Quick-Release Natural Fertilizer, OMRI Listed, 25 qt.
Miracle-Gro
- 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)
Expandable Coco
WONDER SOIL Organic Potting Soil | Ready to Plant Coco Coir Fully Loaded with Nutrients | 3 LBS Bag Expands to 12 Quarts of Indoor Outdoor Soil for Gardens & Plants | Incl Worm Castings, Perlite
Wonder Soil
- NUTRIENT RICH & INDOOR/OUTDOOR FAST GERMINATION… Wonder Soil Premium Organic Potting Soil Mix is the only dry compressed coco coir mix with added amendments of worm castings, mycorrhizae, kelp, perlite and more! Grow your plants faster with stronger roots! Peat free, all natural, family and pet safe!
- A LITTLE DOES A LOT… your little BIG bag of compressed indoor potting soil & garden soil for outdoor plants expands to 4 TIMES THE SIZE when mixed with water; easy to carry & saves vital shed space.
- PRE-MIXED & READY TO USE ORGANIC POTTING MIX … Pre-mixed and ready to use organic potting soil and garden soil mix to help make your gardening or hobby growing a breeze. Simply transplant your desired plants into their new container and add our soil mix or pour our soil mix and plant your seeds.
- WATER RETENTION & DRAINAGE… Coco coir has excellent water retention with dependable drainage and aeration in the root zone. Save up to 50% of water, fertilizer, and seed!
- HEAVY DUTY RESEALABLE BAG… Use what you need and save the rest for later! Keeping your planting soil dry and safe!
Indoor Bundle
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
- 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)
Biochar Power
Wakefield Premium Biochar Blend – Organic Potting Soil for Vegetables, Tomatoes & Gardens – Potting Mix Enriched with Humic Acid & CarbonBoost – Versatile Top Soil for Indoor & Outdoor Plants-2quarts
Wakefield Biochar
- Engineered for Superior Garden Performance: Wakefield’s premium potting soil with biochar, for outdoor plants with Humic acid, and our proprietary CarbonBoost technology, delivering optimal conditions for vibrant, sustained growth. Ideal for everything from raised beds to patio containers, this advanced formula supports healthy root systems whether you’re cultivating juicy tomatoes or leafy herbs.
- Enhanced Root Health and Nutrient Absorption: Formulated as a powerful soil amendment and effective soil conditioner, this advanced biochar blend supports healthy microbial ecosystems for optimized nutrient uptake and improved aeration. Whether you’re cultivating hardy vegetables or delicate herbs, it strengthens root development and enhances long-term fertility. Perfect for gardeners looking to elevate top soil for garden quality or enrich topsoil for vegetable garden beds.
- Smart Water Retention Meets Drainage Balance: Designed with advanced hydration control, this organic vegetable soil helps maintain ideal moisture levels while preventing overwatering. A great fit for container gardening and raised beds, it also works as a reliable soil mixer for sensitive environments. Use it indoor or outdoor, this blend functions beautifully as potting soil for plants.
- 100% Organic, Eco-Conscious Formula: Crafted without synthetic additives, this blend provides a sustainable, chemical-free base for clean cultivation. Ideal for anyone growing vegetables and herbs at home. It performs exceptionally as a gardening soil for vegetables and supports vibrant harvests. Whether you’re using it as a nutrient-rich indoor soil potting mix or as dependable outdoor potting soil, it delivers lasting results.
- Versatile, All-Purpose Growing Medium: From raised beds to balcony containers, this blend adapts effortlessly to diverse planting styles. Whether you’re cultivating with potting soil for outdoor plants, enriching topsoil in open plots, or managing delicate herbs indoors, Wakefield delivers consistent performance. It’s equally effective as indoor plant soil and supports lush growth in compact setups requiring high-quality indoor potting soil.
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 prioritize when choosing an organic potting mix for indoor plants?
Look for a blend that balances moisture retention with good drainage, includes pH‑balancing components like dolomitic limestone, and contains beneficial microbes such as mycorrhizae. Products like Back to the Roots Indoor Mix and Miracle‑Gro Indoor Mix both offer these features, but the former is peat‑free, which reduces its carbon footprint.
How does a peat‑free mix compare to a peat‑based mix in terms of plant health?
Peat‑free mixes use upcycled plant material or coco coir, providing similar water‑holding capacity while being more sustainable. Peat‑based mixes, like Miracle‑Gro Outdoor, often contain quick‑release fertilizers and can be slightly more acidic, which is fine for many plants but may require pH adjustments for sensitive species.
Which mix offers the best value for larger outdoor containers?
Miracle‑Gro Outdoor Potting Mix sold in 25‑qt bags fills three 10‑inch containers and includes a two‑month natural fertilizer, giving a strong cost‑per‑container ratio. The Wakefield Biochar Blend also provides high nutrient density, but its price point is typically higher, making it a premium option rather than the best value.
Are there any mixes that help reduce indoor pest problems like fungus gnats?
Back to the Roots Indoor Mix is formulated without bark or compost, which makes it less attractive to gnats and other pests. Espoma Organic Potting Soil contains earthworm castings and organic matter that can sometimes encourage gnats if over‑watered, so careful watering is essential.
How important is the inclusion of mycorrhizae for root development?
Mycorrhizae form a symbiotic relationship with plant roots, enhancing nutrient uptake and water efficiency. Both Back to the Roots Indoor Mix and Espoma Organic Potting Soil list mycorrhizal inoculants, making them strong choices for gardeners focused on vigorous root growth.
What are the advantages of mixes that contain added fertilizers versus unfertilized blends?
Mixes with built‑in quick‑release fertilizers, like Miracle‑Gro Outdoor and Indoor, give an immediate nutrient boost and simplify feeding schedules. Unfertilized blends, such as Wonder Soil’s coco coir mix, allow you to customize fertilizer applications, which can be beneficial for sensitive or specialty plants.
Can I use the same potting mix for both indoor and outdoor containers?
While many mixes are versatile, indoor mixes often prioritize pest resistance and lower nutrient levels to avoid over‑feeding houseplants. Outdoor mixes, especially those with peat and added fertilizer, are designed for higher nutrient demand and may not perform as well indoors due to moisture retention differences.
Which product provides the most eco‑friendly option without compromising performance?
Back to the Roots 100% Organic mixes are peat‑free, use upcycled plant material, and include sustainable ingredients like yucca extract and dolomitic limestone, offering strong performance with a reduced environmental impact. Wonder Soil’s coco coir blend is also peat‑free and highly water‑efficient, making it another green choice.