Comparison: Best Super Soil Potting Soil (Updated | Nov 11th)
It’s the powerhouse behind vibrant vegetables, explosive blooms, and strong root systems, all without synthetic fertilizers. But with so many “best” super soil potting mixes claiming top results, how do you know which one truly delivers? Let’s dig into the top contenders, compare their ingredients, performance, and value, and help you find the perfect blend for your garden’s next big breakthrough.
- Best for microbe-boosted blend: FoxFarm Happy Frog Potting Soil
- Best for peat-free organic: Back to the Roots 100% Organic Potting Mix (Value 12 Quart) | Premium Blend | Made in The USA
- Best for aerated nutrient mix: FoxFarm Ocean Forest Potting Soil
- Best for high-yield supersoil: California Super Soil Premium 100% Organic Super Soil – 18+ Nutrient Blend – Living Soil Technology – Potting and Garden Soil for Indoor Grow Kit – 6Lbs Bag – Grows 2 Plants
- Best for gnats-resistant mix: Miracle-Gro Houseplant Potting Mix: Fertilized
- Best for quick-release fertilizer: Miracle-Gro Organic Outdoor Potting Mix
- Best for large-scale microbial: FoxFarm Happy Frog Potting Soil
- Best for aquacoir moisture: Miracle-Gro Moisture Control Potting Mix
- Best for concentrated living soil: ‘Super Soil Organic Concentrate
Product Comparison: Best Super Soil Potting Soil
FoxFarm Happy Frog Potting Soil, 12qt – for Indoor/Outdoor Container Plants, Improves Root Efficiency, pH Adjusted for Optimal Nutrient Uptake – Contains Microbes and Humic Acids

- TOP-TIER SOIL FOR BOUNTIFUL GROWTH: FoxFarm organic potting soil for indoor plants is a blend that boosts both indoor and outdoor gardening. Our planting soil enhances root development and plant health, making it a top choice for flourishing growth
- MICROBE-INFUSED SOIL FOR SUPER ROOTS: Enriched with soil microbes, mycorrhizal fungi, and humic acids, this indoor potting soil for house plants promotes efficient nutrient uptake and boosts root growth by improving root systems and plant vitality
- ESSENTIAL NUTRIENTS FOR THRIVING PLANTS: The garden soil for outdoor plants contains bat guano, earthworm castings, and aged forest products, all essential for enhanced nutrient levels, soil structure, and soil vital organic matter for healthy plants
- OPTIMAL SOIL FOR LUSH CONTAINER BLOOM: Ideal for container gardens, fox farms happy frog potting soil for vegetables’ balanced texture and content is suitable for a wide range of plants including flowers, vegetables, shrubs, and houseplants
- READY-TO-USE CONVENIENT SOIL: Simply fill your container with garden fertilizer houseplant potting soil indoor plants, leaving 1 inch below the rim. Water thoroughly after planting. For best results, supplement growth all the seasons with Fox Farm fertilizers
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.
FoxFarm Ocean Forest Potting Soil, 12qt – Light, Aerated Texture, Designed for All Container Plants – pH Adjusted for Optimal Nutrient Uptake, Effectively Retains Moisture (12 Quart (1 Pack))

- ALL-IN-ONE POTTING SOIL SOLUTION: FoxFarm ocean forest potting soil is a blend designed to give your plants everything they need to thrive. Ideal for container plants, this planting soil provides optimal nutrient and soil aeration
- MOISTURE-LOCKING NUTRIENT BLEND: This organic potting soil for plant is packed with aged forest products, sphagnum peat moss, earthworm castings, bat guano, and fish emulsion, each ingredient enhances moisture retention and nutrient uptake
- TOP-NOTCH SOIL FOR EVERY PLANT: From roses and shrubs to seedlings and trees, this garden soil supports vigorous growth and branching. This outdoor & indoor plant soil’s pH-adjusted blend promotes healthy, lush foliage for all plant varieties
- YOUR GO-TO SOIL FOR ALL MEDIUMS: Our potting soil mix is perfect for container gardens, houseplants, and outdoor setups. Ocean plant versatile blend provides a balanced environment for robust growth, ensuring your plants thrive in any setting
- CONVENIENT SOIL READY TO USE: This houseplant potting soil is ready to use out of the bag, no additional ingredients are needed. Use for planting or top-dressing, with the optional pairing of FoxFarm liquid fertilizers for enhanced growth all season
California Super Soil Premium 100% Organic Super Soil – 18+ Nutrient Blend – Living Soil Technology – Potting and Garden Soil for Indoor Grow Kit – 6Lbs Bag – Grows 2 Plants

- 5% SOIL AND 95% NUTRIENTS: California Super Soil is a highly concentrated super soil designed specifically for vegetating and flowering plants. California Super Soil allows growers to achieve higher yeilds while also making the growing process cheaper and easier!
- GOOD LIVING SOIL TECHNOLOGY: All growers will love the living soil technology of California Super Soil since there is no need for advanced nutrients or plant food ever for your vegetable garden. Simply add soils media and regular tap water and that’s it!
- ORGANIC SOIL MIX: Most other indoor plant food and garden soil products are manufactured using process ingredients that cannot be properly absorbed into the soil, unlike ours. The 18+ nature’s nutrient blend ensures your vegetable plants get off to the right start and then continue growing strong right up to harvest.
- MADE EASY GARDEN SOIL MIX: Fermented for just over 2 months allows microbes to begin breaking down amendments and cycling them into plant forms. This prevents any burning from the soil to make certain the best possible growth with our indoor growing soil blend in your indoor garden.
- INDOOR PLANT SOIL KIT INCLUDES: (x2) 6lb bags of Cali Super Soil. This kit will keep you on track with your grow by providing enough for another bulk of plants, or one big grow! Check out our full inventory of items that work hand in hand with our soil like our hydroponics growing system and other hydroponics supplies for your indoor gardening.
- BEST SUPER SOIL: To grow the best, you need the top planting soil. Our new California Super Soil is all you need for the best growing results without using any harsh chemicals. A nutrient rich artisanal soil formulated throughout the years in research and development to result in a final blend unmatched by others
Miracle-Gro Houseplant Potting Mix: Fertilized, Perlite Soil for Indoor Gardening, Designed to Be Less Prone to Gnats, 4 qt.

- Growing indoors is easy under the right conditions; Miracle-Gro Houseplant Potting Mix combines key elements plants need to thrive
- Recommended for growing beautiful indoor houseplant varieties like Pothos, Spider Plants, Monstera, Philodendron, English Ivy and more
- This indoor plant soil is less prone to gnats, thanks to the combination of perlite, sphagnum and peat moss that’s just right
- Certified by the Mulch & Soil Council as a quality product in compliance with industry standards
- A single 4-qt bag fills an 8-inch container; for even more spectacular results, start regular feedings with Miracle-Gro Plant Food 30 days after planting
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)
FoxFarm Happy Frog Potting Soil, 2cu ft – for Indoor/Outdoor Container Plants, Improves Root Efficiency, pH Adjusted for Optimal Nutrient Uptake – Contains Mycorrhizae and Humic Acids

- You will receive (1) 2-cubic foot bag of potting soil per purchase.
- Amended with soil microbes that improve root efficiency and convert nutrients into a form that plants can utilize, enhancing fruit and flower production.
- Designed for container plants, indoor or outdoor. Whether you need a boost in your fruits, vegetables, flowers, or houseplants – Happy Frog will jump-start your containers!
- This unique mix is alive with beneficial soil microbes and mycorrhizal fungi that dramatically expands root development.
- A blend of 50-60% aged forest products, sphagnum peat moss, perlite, and fertilizer. Derived from earthworm castings, oyster shell and dolomite lime.
Miracle-Gro Moisture Control Potting Mix, For Container Plants, Protects against Over- and Under-Watering, 8 qt., 2-Pack

- Miracle-Gro Moisture Control Potting Mix feeds plants for up to 6 months and Grows Plants Twice As Big! (vs unfed plants)
- This potting medium protects against over and under watering; also absorbs up to 33% more water than basic potting soil* with exclusive AquaCoir Formula (*soil that does not contain sphagnum peat moss, coir, and wetting agent)
- Use this gardening product with all types of container plants, including flowers, vegetables, annuals, perennials, and shrubs
- To use this potting soil, fill a container about 1/3 full with potting mix; place your plant in the pot and cover with more mix
- This bundle comes with two 8 qt. bags of Miracle-Gro Moisture Control Potting Mix; each fills two 8-inch containers (exact amounts may vary depending on the size of the root ball)
‘Super Soil Organic Concentrate

- Concentrated Strength Organic Super Soil (just add soil media)
- 5 pounds of concentrate mixed with potting soil amends 25 gallons of containers
- Just water from seed to harvest (microorganisms in the super soil provide nutrients to the roots over time)
- Living Soil technology for your vegetable garden
- Growing does not need to be difficult to get great yields and quality
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 key factors should I evaluate when selecting a super‑soil potting mix?
Look for a blend that includes organic amendments like bat guano, earthworm castings, and mycorrhizal fungi, as these boost nutrient availability and root development. Check the texture; a balanced mix of peat, perlite, and compost ensures good aeration and drainage. Finally, consider whether the product is ready‑to‑use or a concentrate, and compare price per cubic foot for overall value.
How does FoxFarm Happy Frog compare to FoxFarm Ocean Forest for container gardening?
Both soils are organic and microbe‑infused, but Happy Frog emphasizes a higher proportion of aged forest products and a slightly richer nutrient profile for fruiting plants, while Ocean Forest offers a lighter, more aerated texture that suits seedlings and delicate foliage. Happy Frog comes in larger bulk sizes (2 cu ft) which can be more cost‑effective for big projects, whereas Ocean Forest’s 12‑qt bag is convenient for smaller containers. In practice, Happy Frog may deliver a bit more vigor for heavy‑feeding crops, while Ocean Forest provides excellent overall balance for a wide range of plants.
Is a peat‑free, 100 % organic mix like Back to the Roots better for the environment?
Yes, because it uses upcycled plant material and wood fines instead of harvested peat, reducing carbon‑footprint and habitat loss. The blend also includes yucca extract for moisture control, which can lower watering frequency. While it may lack some of the high‑nutrient additives found in premium blends, it still performs well for most herbs, vegetables, and flowers.
Which product gives the best value for a large indoor garden?
California Super Soil’s 2 × 6‑lb kit provides a concentrated 95 % nutrient blend that amends up to 25 gallons of media per bag, making it the most cost‑effective for high‑yield indoor veg gardens. FoxFarm Happy Frog 2‑cu‑ft bag also offers good value with a ready‑to‑use formula and beneficial microbes, but the super‑soil concentrate requires a smaller upfront investment for a larger volume of soil. Consider your willingness to mix the concentrate; if you prefer plug‑and‑play, Happy Frog may be worth the slightly higher price per volume.
Why are soil microbes and mycorrhizal fungi important in potting soils?
Microbes break down organic matter into plant‑available nutrients, while mycorrhizal fungi extend the root’s reach, improving water and mineral uptake. Soils like Happy Frog and Ocean Forest that are inoculated with these organisms often produce stronger root systems and higher yields without additional fertilization. Over time, a healthy microbial community can reduce the need for synthetic nutrients.
Can Miracle‑Gro mixes be used for indoor houseplants, or should I choose a different brand?
Miracle‑Gro Houseplant Potting Mix is formulated for indoor foliage and includes perlite and sphagnum moss to deter fungus gnats, making it suitable for most houseplants. However, if you prioritize organic, peat‑free options or want a richer microbial profile, products like FoxFarm Happy Frog or Back to the Roots may provide better long‑term health. For beginners seeking convenience, Miracle‑Gro remains a reliable choice.
What are the advantages of a concentrated super‑soil concentrate versus a ready‑to‑use bag?
A concentrate like the Super Soil Organic Concentrate lets you amend large volumes of base media at a low cost, giving you flexibility to customize the mix for specific crops. Ready‑to‑use bags such as Happy Frog eliminate the mixing step and guarantee a consistent nutrient balance, which is ideal for casual gardeners. Choose a concentrate if you need to treat many containers; opt for a bag if you prefer simplicity.
How do moisture‑control formulas, like Miracle‑Gro Moisture Control, affect watering frequency and plant health?
Moisture‑control mixes contain coir and wetting agents that retain up to 33 % more water than standard soils, reducing the risk of both over‑ and under‑watering. This can lead to larger, healthier plants because roots stay consistently moist without becoming waterlogged. For growers in dry climates or those who forget to water regularly, these blends provide a forgiving growing medium.
