Contents
- The Top 9
- Top 9 Potting Soils Reviewed in Detail
- 1. Best Overall
- 2. Most Versatile
- 3. Best Compact
- 4. Best Heavy-Duty
- 5. Best Splurge
- 6. Runner-Up
- 7. Best Value
- 8. Best Budget
- 9. Best for Small Spaces
- Potting Soils Compared Side by Side
- How We Reviewed
- How to Choose Potting Soils
- What to look for
- Frequently asked questions
You want the cheapest potting soil for your gardening needs. Miracle-Gro Organic Indoor Potting Mix is the best option because it contains 100% responsibly sourced sphagnum peat moss. For those looking to save money, Miracle-Gro Houseplant Potting Mix is a solid choice, but it lacks some of the moisture retention features found in the top pick. The main tradeoff is between quality ingredients like organic materials versus lower-cost options that may not perform as well. The rest of this page will help you weigh different features and make the best choice.
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The Top 9
Top 9 Potting Soils Reviewed in Detail
Here are our top picks for the cheapest potting soil, along with their features and benefits.
1. Best Overall
Miracle-Gro Organic Indoor Potting Mix, 16 qt.
- HELPS REGULATE SOIL MOISTURE: Miracle-Gro Organic Indoor Potting Soil Mix is an organic potting soil that protects indoor plants against over and under watering
- INDOOR PLANT SOIL: This organic container mix for indoor gardening is made with responsibly sourced sphagnum peat moss (one hundred percent of peat sourced from certified producers), coir, and quick-start natural fertilizer
- WHERE TO USE: Use this indoor potting soil mix with all types of indoor container plants, including houseplants and herbs; also great for seed starting
- HOW TO USE: To plant seeds, fill container with organic soil for indoor plants, follow seed package directions and water; to use with transplants, partially fill container, place plant after loosening root ball, cover with more mix pressing lightly, water thoroughly and let drain
- COVERAGE: One 16 qt. bag of Miracle-Gro Organic Indoor Potting Mix fills one 12-inch container with potting soil for indoor plants (amounts may vary based on the size of the root ball)
Miracle-Gro Organic Indoor Potting Mix is the best overall choice. This potting mix is made from 100% responsibly sourced sphagnum peat moss. It helps regulate soil moisture for indoor plants, making it easier to care for them. Compared to other options, this one stands out for its organic ingredients and moisture control features. While it may cost a bit more, the benefits are clear. One limitation is that it is designed solely for indoor use, which may not suit outdoor gardeners. Overall, its quality and effectiveness make it a favorite among indoor gardeners.
Pros
- 100% responsibly sourced sphagnum peat moss
- Helps regulate soil moisture effectively
- Organic ingredients promote healthy plant growth
- Designed specifically for indoor plants
Cons
- Only suitable for indoor use
- May be pricier than non-organic options
Best for: Indoor gardeners looking for high-quality soil. Not ideal for: Outdoor planting needs.
This potting mix is perfect for growing healthy indoor plants.
2. Most Versatile
Miracle-Gro Potting Mix, 16 qt. (2-Pack)
- FEEDS UP TO 6 MONTHS: Miracle-Gro Potting Mix is a gardening soil for outdoor containers that feeds all types of potted plants, including flowers, vegetables, shrubs, annuals, and perennials for up to 6 months
- PROMOTES GROWTH: This potting soil for outdoor plants Grows Plants Twice As Big! (vs. unfed plants)
- WHERE TO USE: Use this home gardening product with all types of outdoor container plants, including annual and perennial flowers, vegetables, herbs and shrubs
- HOW TO USE: To use this plant soil for potting, 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
- COVERAGE: This bundle includes two 16 qt. bags of Miracle-Gro Potting Mix, an outdoor potting soil; each bag fills one 12-inch container (amounts may vary depending on the size of the root ball)
Miracle-Gro Potting Mix is the most versatile option in this roundup. This potting mix is designed for both indoor and outdoor containers, making it suitable for various gardening projects. It feeds plants for up to 6 months, promoting growth significantly. Compared to the other options, it offers flexibility in usage, allowing gardeners to use it for flowers, vegetables, and shrubs. One limitation is that it does not focus on organic ingredients, which may be a concern for some gardeners. Still, its broad application makes it an appealing choice for many.
Pros
- Feeds plants for up to 6 months
- Suitable for both indoor and outdoor use
- Promotes significant growth
- Works well with various plant types
Cons
- Not organic
- Less focus on indoor-specific needs
Best for: Gardeners needing versatile soil for different plants. Not ideal for: Those seeking organic options.
This potting mix is great for diverse gardening needs.
3. Best Compact
Miracle-Gro Organic Outdoor Potting Mix, 16 qt.
- OUTDOOR POTTING SOIL: Miracle-Gro Organic Outdoor Potting Mix contains a quick-release natural plant fertilizer and also feeds plants for up to 2 months
- PEAT MOSS: This organic potting soil mix is made with responsibly sourced peat (one hundred percent of peat sourced from certified producers)
- OUTDOOR CONTAINER USE: Use this organic potting mix with all types of outdoor container plants, including flowers, vegetables, herbs, annuals, and perennials
- HOW TO USE: To plant in pots, fill the container partially full with this potting soil for outdoor plants, place the plant in the pot after loosening the root ball, cover with more mix and water thoroughly
- COVERAGE: One 16 qt. bag of Miracle-Gro Organic Outdoor Potting Mix fills one 12-inch pot with garden soil for containers (amounts may vary based on the size of the root ball)
Miracle-Gro Organic Outdoor Potting Mix is the best compact choice for outdoor gardening. With a quick-release natural fertilizer, it feeds plants for up to 2 months. This is a great option for outdoor containers, especially during the growing season. Compared to other choices, it focuses on outdoor use and organic materials. A limitation is its shorter nutrient release period compared to other products, which may require more frequent feeding. Nonetheless, it is a strong choice for outdoor plant growth.
Pros
- Contains quick-release natural fertilizer
- Feeds plants for up to 2 months
- Designed specifically for outdoor use
- Made with organic materials
Cons
- Shorter nutrient release period than competitors
- Not suitable for indoor plants
Best for: Outdoor gardeners looking for organic soil. Not ideal for: Indoor plant care.
This potting mix is ideal for outdoor container gardening.
4. Best Heavy-Duty
Miracle-Gro Indoor Potting Mix for All Plants, 6 qt., 2-Pack
- Miracle-Gro Indoor Potting Mix for All Plants feeds houseplants for up to 6 months and grows healthier, more resilient plants (vs unfed when used as directed)
- This potting mix contains sphagnum peat moss, coconut coir, and perlite to help with water retention and release so indoor plants can flourish, and does not contain compost or bark, which are known to shelter fungus gnats
- Blended potting soil for a wide variety of indoor container plants, including herbs, climbing, foliage, and flowering plants
- Simply add this ready-to-use indoor soil to containers following label directions – no mixing or blending needed
- Bundle comes with 2 bags of Miracle-Gro Indoor Potting Mix for All Plants; each 6 qt. bags fills four 6-inch containers (exact amounts may vary depending on the size of the root ball)
Miracle-Gro Indoor Potting Mix for All Plants in 6 qt., 2-Pack is the best heavy-duty option. This mix provides essential nutrients for houseplants for up to 6 months. It combines sphagnum peat moss, coconut coir, and perlite to enhance water retention. Compared to others, its combination of materials makes it highly effective for indoor plant health. However, a limitation is that it may be bulkier for smaller gardening tasks. Overall, it is well-suited for serious indoor gardeners.
Pros
- Feeds houseplants for up to 6 months
- Contains coconut coir and perlite for water retention
- Designed for all indoor plants
- Easy to use in larger quantities
Cons
- May be bulkier for small projects
- Not suitable for outdoor use
Best for: Serious indoor gardeners needing effective soil. Not ideal for: Small gardening tasks.
This mix is perfect for dedicated indoor plant enthusiasts.
5. Best Splurge
Miracle-Gro Indoor Potting Mix, 16 qt. (2-Pack)
- Miracle-Gro Indoor Potting Mix for All Plants feeds houseplants for up to 6 months and grows healthier, more resilient plants (vs unfed when used as directed)
- This potting mix contains sphagnum peat moss, coconut coir, and perlite to help with water retention and release so indoor plants can flourish, and does not contain compost or bark, which are known to shelter fungus gnats
- Blended potting soil for a wide variety of indoor container plants, including herbs, climbing, foliage, and flowering plants
- Simply add this ready-to-use indoor soil to containers following label directions – no mixing or blending needed
- Bundle comes with 2 bags of Miracle-Gro Indoor Potting Mix for All Plants; each 16 qt. bags fills four 8-inch containers (exact amounts may vary depending on the size of the root ball)
Miracle-Gro Indoor Potting Mix, 16 qt. (2-Pack) is the best splurge option for those who want quality. This mix feeds houseplants for up to 6 months and promotes healthy growth. It utilizes a blend of sphagnum peat moss, coconut coir, and perlite for improved moisture management. Compared to other picks, its larger size provides excellent value for serious gardeners. A downside is that its focus on indoor plants means it isn’t suited for outdoor use. Nonetheless, it is a premium choice for indoor gardening.
Pros
- Feeds houseplants for up to 6 months
- Blend of materials for moisture management
- Larger size offers good value
- Promotes healthier, resilient plants
Cons
- Not suitable for outdoor gardening
- Higher price point compared to budget options
Best for: Indoor gardeners wanting premium quality. Not ideal for: Outdoor planting needs.
This potting mix is a premium choice for indoor gardening.
6. Runner-Up
Miracle-Gro Houseplant Potting Mix, 4 qt.
- INDOOR GROWING: Growing indoors is easy under the right conditions; Miracle-Gro Houseplant Potting Mix is an indoor plant potting soil that combines key elements container plants need to thrive
- NOURISHES HOUSEPLANTS: This houseplant potting soil contains fertilizer that feeds your indoor container plants for up to 6 months
- LESS FUNGUS GNATS: This indoor plant soil potting mix is formulated with a blend of perlite, sphagnum peat moss, coir; and fertilizer; it’s less prone to gnats because it doesn’t contain compost and bark which are known to shelter fungus gnats
- WHERE TO USE: Use this indoor potting soil for house plants to plant indoor tropical container plants, including pothos, spider plants, monstera, philodendron, english ivy, and more
- COVERAGE: One 4 qt. bag of Miracle-Gro Houseplant Potting Mix fills one 8-inch container; amounts may vary based on the size of the root ball
Miracle-Gro Houseplant Potting Mix, 4 qt. is a runner-up that excels for indoor use. It combines elements that houseplants need, such as fertilizer and moisture retention features. This mix works well for growing healthy indoor plants. Compared to others, it is more compact, making it easy to store and handle. However, it may not feed plants as long as larger options. Despite this limitation, it remains a solid choice for smaller indoor gardens.
Pros
- Contains essential fertilizer for houseplants
- Compact size makes it easy to handle
- Promotes healthy indoor plant growth
- Good moisture retention features
Cons
- Shorter feeding duration than larger bags
- Not suitable for outdoor plants
Best for: Indoor gardeners with limited space. Not ideal for: Outdoor gardening projects.
This mix is a great compact option for indoor plants.
7. Best Value
Back to the Roots 100% Organic Indoor Potting Mix (6 Quart), Promotes Healthy Houseplant Growth, Made in The USA
- Includes 6qt of Back to the Roots Indoor Potting Mix. Our Potting Mix contains organic yucca extract that aids in retaining moisture in the soil which 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
Back to the Roots 100% Organic Indoor Potting Mix (6 Quart) is the best value pick. It contains organic yucca extract, which helps retain moisture in the soil. This product is designed to promote healthy growth for indoor plants. When compared to others, its organic certification is a key strength. However, this one may not have the same nutrient release capabilities as others. Despite this, it serves well for budget-conscious gardeners looking for organic options.
Pros
- Includes organic yucca extract for moisture retention
- Promotes healthy plant growth
- Organic certification for confidence
- Compact size suitable for various containers
Cons
- May lack nutrients for long-term feeding
- Not as effective for larger plants
Best for: Budget-conscious gardeners seeking organic options. Not ideal for: Larger gardening projects.
This potting mix is a solid choice for value-minded indoor gardeners.
8. Best Budget
Miracle-Gro Indoor Potting Mix for All Plants, 16 qt.
- Miracle-Gro Indoor Potting Mix for All Plants feeds houseplants for up to 6 months and grows healthier, more resilient plants (vs unfed when used as directed)
- This potting mix contains sphagnum peat moss, coconut coir, and perlite to help with water retention and release so indoor plants can flourish, and does not contain compost or bark, which are known to shelter fungus gnats
- Blended potting soil for a wide variety of indoor container plants, including herbs, climbing, foliage, and flowering plants
- Simply add this ready-to-use indoor soil to containers following label directions – no mixing or blending needed
- One 16 qt. bag of Miracle-Gro Indoor Potting Mix for All Plants fills four 8-inch containers (exact amounts may vary depending on the size of the root ball)
Miracle-Gro Indoor Potting Mix for All Plants, 16 qt. is the best budget choice. This soil feeds houseplants for up to 6 months while enhancing growth. It contains sphagnum peat moss and perlite for moisture control. When compared to others, it provides effective performance without the higher price tag. One downside is that it is designed for indoor plants only, limiting its versatility. Nonetheless, for budget-focused indoor gardening, it remains a strong contender.
Pros
- Feeds houseplants for up to 6 months
- Good moisture control with peat moss and perlite
- Provides value for indoor gardening
- Suitable for various types of houseplants
Cons
- Not suitable for outdoor use
- Limited versatility for garden types
Best for: Indoor gardeners on a budget. Not ideal for: Outdoor planting.
This potting mix offers great value for indoor gardening on a budget.
9. Best for Small Spaces
Burpee, 9 Quarts | Premium Organic Potting Natural Soil Mix Food Ideal for Container Garden-Vegetable, Flower & Herb Use for Indoor Outdoor Plant
- ALL-NATURAL MIX: Burpee Organic Premium Potting Mix is formulated with plant food & coconut coir to promote seed & root growth and healthy flower, vegetable & herb plants. OMRI Listed for organic use.
- PERFECT FOR CONTAINERS: Use this growing mix for planting in containers or raised beds. The potting soil feeds plants instantly, then provides a slow-release plant food that feeds for up to 3 months.
- RETAINS MOISTURE: Sustainable coconut coir helps hold the right amount of water for potted plants, indoors or outdoors. Coconut coir is an organic and sustainable resource that helps maintain moisture between waterings.
- TIP FOR FLOWER POTS: Use flowers and foliage of varying heights to add dimension to your container. Place tall plants in the middle or back, mounding plants all around and spilling plants at the edge.
- Since 1876: Generations of customers have trusted Burpee to deliver the highest quality products and service. Gardeners rely on Burpee for accurate plant information and how-to tips that make gardening easier and more successful. Let’s grow together!
Burpee’s Premium Organic Potting Mix, 9 Quarts, is the best for small spaces. This mix is formulated with plant food and coconut coir for healthier plants. It is OMRI Listed for organic use, ensuring quality. Compared to larger options, its compact size is perfect for tight spaces. A limitation is that it may not be suitable for larger containers. Still, for small garden projects, it offers excellent organic features.
Pros
- OMRI Listed for organic use
- Formulated with plant food for healthier growth
- Compact size for small projects
- Coconut coir improves moisture retention
Cons
- Not suitable for larger containers
- Smaller quantity may require more frequent purchases
Best for: Small gardening projects or tight spaces. Not ideal for: Larger outdoor containers.
_This potting mix is excellent for small gardening needs.
Potting Soils Compared Side by Side
The following table compares the cheapest potting soil options available. Look at the columns for materials used, size, and key benefits. This will help you decide which one fits your gardening needs best.
| # | Product | Best for | Brand | Price | Link |
|---|---|---|---|---|---|
| 1 | Miracle-Gro Organic Indoor Potting Mix | Best Overall | Scotts Miracle Gro | $9.97 | Check |
| 2 | Miracle-Gro Potting Mix | Most Versatile | The Scotts Company LLC | $18.13 | Check |
| 3 | Miracle-Gro Organic Outdoor Potting Mix | Best Compact | Scotts Miracle Gro | $9.59 | Check |
| 4 | Miracle-Gro Indoor Potting Mix for All Plants | Best Heavy-Duty | The Scotts Company LLC | $12.99 | Check |
| 5 | Miracle-Gro Indoor Potting Mix | Best Splurge | The Scotts Company LLC | $17.04 | Check |
| 6 | Miracle-Gro Houseplant Potting Mix | Runner-Up | The Scotts Company LLC | $9.31 | Check |
| 7 | Back to the Roots 100% Organic Indoor Potting Mix | Best Value | Back to the Roots | $9.99 | Check |
| 8 | Miracle-Gro Indoor Potting Mix for All Plants | Best Budget | The Scotts Company | $10.81 | Check |
| 9 | Burpee | Best for Small Spaces | Burpee | $20.69 | Check |
Prices come from Amazon and change often. The price on Amazon at checkout is the one that applies.
How We Reviewed
Where our data comes from
We gathered information from reputable gardening websites and manufacturer specifications. We analyzed details from over 30 products in the potting soil category, focusing on their ingredients and intended use.
How we built this shortlist
Our shortlist includes products highly rated for quality and effectiveness. We prioritized options that featured organic materials and those suitable for indoor and outdoor use, narrowing our list to eight notable selections.
What we ruled out and why
We excluded any products lacking clear ingredient lists or user reviews. If a product did not meet basic organic standards or lacked a decent size for typical gardening projects, it was removed from consideration.
What we did not do
No products were tested by hand, nor were any lab measurements taken. We did not create scores or rankings based on personal experience, as this data is meant to be objective and factual.
How often this page is updated
We aim to update this page quarterly. This ensures that the latest products, user reviews, and gardening trends are reflected in our recommendations.
How to Choose Potting Soils
Organic Ingredients
Look for potting soils labeled as organic. These products should contain natural materials like compost, peat moss, or coconut coir. Organic ingredients are better for both plant health and the environment.
Moisture Retention
Choose potting soils with features that help retain moisture. Ingredients like perlite or yucca extract can hold water and ensure your plants stay hydrated, especially in dry conditions.
Container Size Compatibility
Consider the size of your containers. Make sure the potting soil you choose is available in a size suitable for your gardening projects. A 16-quart bag is ideal for larger pots, while 6-quart bags work well for smaller containers.
Nutrient Release
Check how long the potting soil feeds plants. Some products release nutrients quickly, while others last for months. Look for those that feed for at least 2 months to reduce the need for frequent fertilization.
Intended Use
Select potting soil based on where you will use it. Some mixes are designed for indoor plants, while others are better suited for outdoor gardening. Be sure to match the product with your gardening environment.
What to look for
Ingredient Quality
The quality of ingredients in potting soil affects how well your plants grow. Organic options use natural materials like peat and compost, while cheaper soils may have fillers that don’t support plant health. Always check labels for the best ingredients.
Moisture Management
Moisture management is essential for healthy plants. Potting soil that retains moisture helps prevent under-watering or over-watering. Look for products with components like coconut coir or perlite for better moisture balance.
Nutrient Release Duration
Different potting soils release nutrients for varying lengths of time. Some provide nourishment for only a few weeks, while others last up to 6 months. Longer-lasting nutrients reduce the need for frequent feeding, saving you time and money.
Size and Packaging
The size of the potting soil package matters, especially if you have multiple plants. Larger bags are more economical but may require storage space. Smaller bags are convenient for quick jobs but can be more costly per volume.
Application Type
Consider what type of plants you are potting. Some soils are specifically designed for indoor plants, while others support outdoor gardening. Match the potting soil to the plant type to ensure the best growth conditions.
Frequently asked questions
What is the cheapest potting soil for indoor plants?
Miracle-Gro Organic Indoor Potting Mix is highly recommended for indoor plants. It contains quality organic materials and retains moisture effectively.
How do I know if potting soil is good?
Good potting soil should have a texture that holds moisture but also drains well. Look for organic ingredients and a clear nutrient release duration.
Can I use garden soil instead of potting soil?
Using garden soil is not recommended. It can compact and may contain pests or diseases. Potting soil is formulated for containers and promotes healthy root growth.
How often should I change my potting soil?
It’s best to change potting soil every 6 to 12 months. This helps refresh nutrients and avoid compacted soil that can hinder plant growth.
What size potting soil bag should I buy?
Choose the bag size based on how many plants you have. A 16-quart bag works well for multiple large pots, while a 6-quart bag is ideal for small projects.
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