Comparison: Best Potting Soil For Sale Online (Updated | Nov 11th)
Not all bags are created equal, and choosing the best one can mean the difference between thriving greenery and a wilted mess. With so many options available online, it’s easy to feel overwhelmed. That’s why we’ve dug deep—literally—to compare the top potting soils you can buy online, so you can shop with confidence and watch your plants flourish.
- Best for organic outdoor blend: Miracle-Gro Organic Outdoor Potting Mix
- Best for gnat-resistant indoor: Miracle-Gro Houseplant Potting Mix: Fertilized
- Best for growth boost mix: Miracle-Gro Potting Mix
- Best for moisture master: Miracle-Gro Moisture Control Potting Mix
- Best for bulk bloom bundle: Miracle-Gro Potting Mix
- Best for rapid seed starter: Miracle-Gro Seed Starting Potting Mix
- Best for large organic outdoor: Miracle-Gro Organic Outdoor Potting Mix
- Best for indoor water guard: Miracle-Gro Organic Indoor Potting Mix
- Best for coir gnat guard: Miracle-Gro Indoor Potting Mix
- Best for succulent drain mix: Miracle-Gro Cactus
Product Comparison: Best Potting Soil For Sale Online
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 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 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 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 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 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
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 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 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 Cactus, Palm and Citrus Potting Mix, for Indoor or Outdoor Potted Plants, Great for Succulents, 8 qt., 2-Pack
- Miracle-Gro Cactus, Palm & Citrus Potting Mix features a fast-draining formula and is enriched with Miracle-Gro Plant Food
- This fast-draining formula is blended to help promote successful growing of cacti, potted palms, citrus, and other succulents
- This cactus potting mix is designed for indoor and outdoor container plants, including cacti, palm plants, citrus trees, and succulents
- To use this succulent soil mix, fill a pot with a drainage hole 1/3 full of mix, top with more mix after placing plant, and press lightly
- This bundle includes two 8 qt. bags of Miracle-Gro Cactus, Palm & Citrus Potting Mix, each able to fill two 8-inch containers (amounts may vary based on root ball size)
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 organic and non‑organic potting mixes?
Organic mixes, like the Miracle‑Gro Organic Outdoor and Indoor blends, use responsibly sourced peat and natural fertilizers that release nutrients slowly over about two months. Non‑organic options contain synthetic quick‑release fertilizers that feed plants for up to six months, giving a faster growth boost. Consider whether you prefer a natural formulation and longer feeding intervals or a stronger, quicker nutrient surge.
What are the benefits of the Moisture Control formula compared to standard mixes?
Moisture Control potting soil incorporates an AquaCoir system that absorbs up to 33% more water, helping prevent both over‑ and under‑watering. It also includes a six‑month feeding schedule, so plants stay nourished while the moisture balance stays stable. This makes it ideal for gardeners who want a low‑maintenance mix for container plants.
Which mix is best for indoor houseplants versus outdoor containers?
For indoor houseplants, the Miracle‑Gro Houseplant Potting Mix or Indoor Potting Mix are formulated with perlite, sphagnum moss, and coconut coir to reduce fungus gnats and retain moisture. Outdoor containers benefit from the Organic Outdoor Mix or the standard Potting Mix, which provide a quick‑release fertilizer and are suited for flowers, vegetables, and herbs exposed to the elements.
How does the quick‑release fertilizer duration differ among the mixes?
The Organic Outdoor mixes feed plants for about two months, while the regular Miracle‑Gro Potting Mixes and Moisture Control blends extend feeding up to six months. Seed Starting Mix includes an enriched formula for rapid root development but is intended for short‑term use until seedlings are established. Choose a mix based on how often you want to add supplemental fertilizer.
Is the amount of soil per bag sufficient for my container size?
A 16‑qt bag of Organic Outdoor Mix typically fills one 12‑inch pot, whereas an 8‑qt bag of Houseplant Mix fills an 8‑inch container. The larger 25‑qt Outdoor bag can fill three 10‑inch pots, and bundle packs (two 8‑qt bags) generally cover two 8‑inch containers each. Always check the product’s coverage guide and consider the root ball size for precise planning.
What should I know about pest resistance, especially fungus gnats, in these mixes?
The Houseplant Potting Mix and Indoor Potting Mix are blended with perlite, sphagnum moss, and coconut coir, which create a less hospitable environment for gnats. In contrast, standard outdoor mixes contain more peat and may retain moisture longer, potentially attracting gnats if over‑watered. Using a mix with built‑in pest‑resistant components can reduce the need for chemical controls.
How does price‑to‑value compare across the different bag sizes and features?
Bundle packs, such as the two‑bag 8‑qt Seed Starting or Cactus, Palm & Citrus mixes, offer a lower cost per quart and are useful for multiple projects. Larger single bags like the 25‑qt Organic Outdoor mix provide economies of scale for extensive garden beds. Evaluate the included features—organic certification, moisture control technology, or specialized formulas—to determine which product gives the best return for your specific gardening needs.