Comparison: Best Miracle Gro Super Soil (Updated | Nov 11th)
If you’ve ever wondered whether Miracle-Gro’s super soils live up to the hype, you’re not alone. From lush container gardens to thriving outdoor beds, we’re breaking down the differences in nutrients, texture, and results. Spoiler: not all “miracles” are created equal. Let’s find out which Miracle-Gro super soil deserves a spot in your garden—and which might just fall short of the promise.
- Best for organic outdoor feed: Miracle-Gro Organic Outdoor Potting Mix
- Best for 6-month boost: Miracle-Gro Potting Mix
- Best for gnat-resistant indoor: Miracle-Gro Houseplant Potting Mix: Fertilized
- Best for moisture master: Miracle-Gro Moisture Control Potting Mix
- Best for coir moisture: Miracle-Gro Indoor Potting Mix
- Best for organic water guard: Miracle-Gro Organic Indoor Potting Mix
- 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 concentrated grow: California Super Soil Premium 100% Organic Autoflower Super Soil – 18+ Nutrient Blend – Garden Soil for Indoor Grow Kit – 6Lbs Bag – Grows 2 Plants
- Best for all‑season growth: Miracle-Gro Potting Mix
- Best for rapid root starter: Miracle-Gro Seed Starting Potting Mix
Product Comparison: Best Miracle Gro Super 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 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 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 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)
Miracle-Gro Indoor Potting Mix, Blended for a Variety of Houseplants, Feeds for up to 6 Months, 16 qt., 2-Pack
- Miracle-Gro Indoor Potting Mix feeds houseplants for up to 6 months and is designed to be less prone to gnats (contains no compost or bark, which are known to shelter fungus gnats)
- This potting mix contains coconut coir, which holds and releases water and helps soil re-wet
- Where to use: Blended for a wide variety of indoor container plants, including climbing, foliage, flowering, and tropical plants
- How to use: To use, fill a container about 1/3 full with potting mix; add more mix after placing your plant in the pot
- What’s included: This bundles includes two 16 qt. bags of Miracle-Gro Indoor Potting Mix, each able to fill one 12-inch containers (exact amount may vary based on the root ball size)
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)
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
California Super Soil Premium 100% Organic Autoflower Super Soil – 18+ Nutrient Blend – Garden Soil for Indoor Grow Kit – 6Lbs Bag – Grows 2 Plants
- PREMIUM SOIL CONCENTRATE: Soil is one of the most important aspects to any grow. Just like it is for any other organism, a balanced diet is extremely important for your plant’s health. Optimal nutrient ratios and concentrations in California Super Soil nourish your plant and allow for a bountiful, organic grow!
- STOP TRYING, START GROWING: California Super Soil is all you need for the best growing results! All ingredients are 100% organic, designed on a molecular level to be the perfect growing medium. You will never have to add any nutrients or worry about management all the way from seed to harvest. One-step solution to growing bigger, healthier plants with robust root structures.
- CONCENTRATED STRENGTH: Mix the organic concentrate with your soil medium to give your plants what they need to flourish. With just a single 5 lb. bag, you can create up to 30 gallons of Living Super Soil! 100% more concentrated than leading brands with active microbes, shown to increase plant uptake of vital nutrients, such as phosphorus.
- LIVING SOIL TECHNOLOGY: Our concentrate is fermented, allowing microbes to begin breaking down amendments into forms that can be absorbed by your plants. Multiple scientific studies have shown these microbes increase plant uptake of vital nutrients, such as phosphorus, and improve soil aggregation. This regulation also helps prevent any potential nutrient burn to your plant!
- INDOOR PLANT SOIL KIT INCLUDES: 5 lbs of Premium Soil Concentrate & Rapid Rooters | 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
Miracle-Gro Potting Mix, For Indoor or Outdoor Potted Plants, Flowers, Vegetables, Shrubs, Annuals, and Perennials, Feeds Up to 6 Months, 8 qt.
- Feeds all potted plants: Miracle-Gro Potting Mix feeds all types of potted plants, including flowers, vegetables, shrubs, annuals, and perennials for up to 6 months
- Promotes growth: This potting soil Grows Plants Twice As Big! (vs. unfed plants)
- Boosts color: Get more blooms for more color (vs unfed plants)
- Application: To apply 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; water thoroughly
- Coverage: Each 8 qt. bag of Miracle-Gro Potting Mix fills two 8 inch containers (exact amounts may vary depending on the size of the root ball)
Miracle-Gro Seed Starting Potting Mix, 8 Quarts (Pack of 2), For Use in Containers
- Specially formulated for fast root development
- Enriched with Miracle-Gro Plant Food
- Excellent for starting cuttings
- Use when starting from seed and with leaf, stem or root cuttings
- This bundle includes two 8 qt. bags of Miracle-Gro Seed Starting Potting Mix
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 main differences between Miracle‑Gro Organic Outdoor Potting Mix and the standard Miracle‑Gro Potting Mix?
The Organic Outdoor mix contains a quick‑release natural fertilizer and is made with responsibly sourced peat, feeding plants for up to two months. The standard mix includes a synthetic fertilizer that lasts up to six months and is marketed to grow plants twice as big. Choose the organic version if you prefer natural inputs for outdoor containers, or the regular mix for longer‑lasting feed and faster growth.
Which product should I use for indoor houseplants that are prone to fungus gnats?
Miracle‑Gro Houseplant Potting Mix and the Indoor Potting Mix are both formulated to be less attractive to gnats, using a blend of perlite, sphagnum, peat moss, and coconut coir. The Houseplant mix also includes perlite for better aeration, while the Indoor mix emphasizes a gnat‑resistant formula without compost or bark. Either works well, but the Houseplant mix is especially good for foliage plants like pothos and monsteras.
How does the Moisture Control Potting Mix protect against over‑ and under‑watering?
Moisture Control uses an AquaCoir formula that absorbs up to 33% more water than basic potting soil and releases it slowly, reducing the risk of both drought stress and waterlogging. It also contains a built‑in fertilizer that feeds plants for up to six months. This makes it a solid choice for busy gardeners who want a more forgiving medium.
Is the California Super Soil a better value than buying multiple Miracle‑Gro bags?
California Super Soil is a concentrated organic blend that can be mixed with a small amount of base soil to create up to 30 gallons of living soil from a single 5‑lb bag, eliminating the need for additional fertilizers. In contrast, Miracle‑Gro bundles provide ready‑to‑use mix but require separate fertilizer applications over time. If you grow many plants and want an all‑in‑one organic solution, the Super Soil offers superior long‑term value.
What should I consider when choosing between the Organic Indoor Potting Mix and the regular Indoor Potting Mix?
Both mixes protect against over‑ and under‑watering, but the Organic Indoor version adds a quick‑start natural fertilizer and uses certified peat, appealing to eco‑conscious growers. The regular Indoor mix relies on synthetic nutrients for up to six months of feeding. Your decision should hinge on whether you prioritize organic ingredients or longer feeding intervals.
Do the bundle packs (e.g., two 16‑qt. bags) provide a cost advantage over single bags?
Bundle packs typically lower the per‑quart price and ensure you have enough mix to fill multiple containers, which is useful for larger projects or ongoing gardening. For occasional use, a single 4‑qt. bag of Houseplant mix may be more economical to avoid excess. Compare the unit price on the product page to determine the best savings for your needs.
Can I use the Seed Starting Potting Mix for transplanting seedlings into larger pots?
Yes, the Seed Starting mix is enriched with Miracle‑Gro Plant Food and promotes fast root development, making it ideal for seedlings and cuttings. When transplanting, you can blend it with a regular potting mix to provide a balanced medium for mature growth. This approach gives seedlings a strong start while ensuring long‑term nutrient availability.
Which Miracle‑Gro mix is best for vegetable gardening in containers?
Both the Organic Outdoor and the standard Moisture Control mixes work well for container vegetables; the Organic mix offers natural fertilizer for up to two months, while Moisture Control gives longer water retention and six‑month feeding. If you want organic certification and a shorter feeding cycle, choose the Organic Outdoor mix; for extended moisture management and longer feeding, opt for Moisture Control.