Comparison: Best Soil Blocking Mix For Sale (Updated | Nov 11th)
If you’re into no-fuss, eco-friendly gardening, you’ve probably heard of soil blocking—and the right mix can make all the difference. But with so many options on the market, how do you know which one actually delivers fluffy, sturdy blocks that your seedlings will love? Skip the guesswork—let’s break down the best soil blocking mixes you can buy today.
Editor’s Choice
Best for a specific purpose
- Best for indoor gnats-resistant: Miracle-Gro Houseplant Potting Mix: Fertilized
- Best for moisture-control mix: Miracle-Gro Moisture Control Potting Mix
- Best for rapid seed starter: Miracle-Gro Seed Starting Potting Mix
- Best for aroid specialist mix: Rosy Soil Aroid Soil Potting Mix – Peat-Free
- Best for organic outdoor blend: Miracle-Gro Organic Outdoor Potting Mix
- Best for growth-boost mix: Miracle-Gro Potting Mix
- Best for compact coco coir: GrowBycoco Coco Coir 650g Brick – Premium Organic Coco Peat Brick for Garden Soil & Potting Mixes-Coconut Fiber Substrate Mixes with Potting Soil for Indoor Plants & Outdoor Plants
- Best for all-purpose potting: Miracle-Gro Potting Mix
- Best for premium soil blocker: BlumWay Upgraded Soil Blocker
- Best for large-scale coco coir: Growbycoco Coco Coir Brick(11lbs) – Premium Organic Coco Peat Brick for Garden Soil & Potting Mixes-Coconut Fiber Substrate Mixes with Potting Soil for Indoor Plants & Outdoor Plants -19 Gallons
Product Comparison: Best Soil Blocking Mix For Sale
Indoor Gnats-Resistant
Miracle-Gro Houseplant Potting Mix: Fertilized, Perlite Soil for Indoor Gardening, Designed to Be Less Prone to Gnats, 4 qt.
Miracle-Gro
- 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
Moisture-Control Mix
Miracle-Gro Moisture Control Potting Mix, For Container Plants, Protects against Over- and Under-Watering, 8 qt., 2-Pack
Miracle-Gro
- 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)
Rapid Seed Starter
Miracle-Gro Seed Starting Potting Mix, 8 Quarts (Pack of 2), For Use in Containers
Miracle-Gro
- 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
Aroid Specialist Mix
Rosy Soil Aroid Soil Potting Mix – Peat-Free, Microbially Active Biochar Powered Soil for Aroids – Superior Aeration & Drainage for Aroid Plants – Ideal for Indoor Gardening – 4 Quarts
Rosy Soil
- Ideal for Aroid Plants: Formulated specifically for aroids like Monstera, Alocasia, and Philodendron; offers excellent aeration and drainage for healthier roots; perfect aroid potting mix that promotes strong growth and vibrant foliage; designed for both indoor and outdoor aroid plants, ensuring optimal conditions for thriving plants!
- Chunky Texture for Better Drainage: This indoor potting mix features a chunky texture to prevent compaction and root rot; promotes excellent drainage and aeration for aroids, ensuring roots thrive in optimal conditions; perfect for gardeners looking for potting soil for indoor plants that provides superior airflow for root health.
- Organic & Nutrient-Rich Formula: Enriched with organic garden soil components like worm castings, mycorrhizae, and pine bark fines; promotes healthy, nutrient-rich soil for your plants; a great option for potting soil indoor plants and outdoor plants alike; helps improve soil structure and supports natural plant growth.
- Eco-Conscious Packaging: Sustainable packaging that aligns with eco-friendly values; resealable bag designed for reuse, promoting responsible plant care; ideal for those who prefer gardening soil that’s both effective and environmentally responsible; perfect for gardeners looking for quality, eco-conscious soil options.
- Sustainable & Eco-Friendly: Peat-free formula that reduces environmental impact; biochar acts as a moisture retainer and carbon store; supports plant health while being net carbon negative; packaged in a resealable, eco-friendly bag made from 60% recycled material, making it an ideal choice for environmentally conscious gardeners!
Organic Outdoor Blend
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)
Growth-Boost Mix
Miracle-Gro Potting Mix, For Container Plants, Flowers, Vegetables, Annuals, Perennials, Shrubs, Feeds for up to 6 Months, 16. qt., 2-Pack
Miracle-Gro
- 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)
Compact Coco Coir
GrowBycoco Coco Coir 650g Brick – Premium Organic Coco Peat Brick for Garden Soil & Potting Mixes-Coconut Fiber Substrate Mixes with Potting Soil for Indoor Plants & Outdoor Plants
growbycoco
- 7X+ EXPANSION- Our coco coir bricks are highly compressed, one coconut coirbrick expand to more than seven times its original size when hydrated,one cococoir brick yielding 7-9 liters (1.4 lb) of premium growing medium and ideal for compact storage, easy transportation and for versatile gardening applications.
- LOW EC- Coconut coir designed with low electrical conductivity, this coco peat brick is free of extra salts, coco fiber potting soil making an excellent choice for growing plants, vegetables, herbs, and seedlings in indoor gardens and outdoor gardens.
- pH NEUTRAL -Organic coco coir pith brick for plants maintains a neutral pH level, ensuring compatibility with a wide variety of plants, including micro greens, flowers, vegetables, and hydroponic systems and this coconut coir for plants perfect for indoor planters, greenhouses, and outdoor gardens.
- 100% NATURAL- Our cococoir garden soil for plants sourced from sustainable coconut husks, eco-friendly, renewable, greener and more sustainable alternative to peat moss.
- EXCEPTIONAL MOISTURE RETENTION – Growbycoco coconut coir brick absorbs and retains water efficiently while maintaining excellent drainage and our cococoir soil perfect for seed starting, container gardening, hanging baskets, garden beds, raised planters and indoor and outdoor gardens.
- VERSATILE USAGE ACROSS APPLICATIONS- Growbycoco coconut fiber peat suitable for indoor and outdoor plants, hydroponic, micro greens,herb planters, flower pots, vegetable gardens, seed trays,composting and Growbycoco coir for plants supports diverse gardening needs with ease.
- SUPERIOR AERATION & DRAINAGE – Coco coir enhances soil aeration and prevents compaction and allows plant roots to access oxygen while effectively draining excess water. Coconut fiber potting soil mix promotes plant root growth and minimizes risks of waterlogging.
- NATURAL SOIL AMENDMENT & ENHANCER – Our coir for plants mix with potting soil or use as a standalone medium to improve soil structure, increase fertility, and boost nutrient retention for healthier plants and this coir soil ideal for both indoor and outdoor gardening.
- SUSTAINABLE GROWING SOLUTION- Our 650g coco coir bricks made from 100% renewable cococoir that’s naturally biodegradable. Unlike peat moss, doesn’t contribute to wetland destruction, cocopeat making it an eco-friendly choice for gardeners.
All-Purpose Potting
Miracle-Gro Potting Mix, For Indoor or Outdoor Potted Plants, Flowers, Vegetables, Shrubs, Annuals, and Perennials, Feeds Up to 6 Months, 8 qt.
Miracle-Gro
- 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)
Premium Soil Blocker
BlumWay Upgraded Soil Blocker, 8 Cell Seed Blocker 2 inch Quad Soil Block Maker Manual with 3 Types of Seed Pins,Hand-held Soil Blocking Tool for Seed Stater Tray Outdoor Plants
BlumWay
- 【8 Cells Soil Blocker More Efficiently】Upgraded soil blocker comes with 8 cells 2 inch blockers, with 3 different seed pins( square seed pins,short and long cylinder seed pins) which allows you get more and different soil blocks once a time! Strong working structure helps soil cubes better separated without getting stuck, saving your more time and energy. A thoughtful soil blocking set for seed stater tray
- 【High Quality Resistant Stainless Steel】Made of good stainless steel,this soil block maker can be used for years! Resistant Heavy-gauge Steel-epic with strong structure, easy to use and clean. Suitable for any kinds of soil, a good helper in your garden seeds and plant seeds
- 【Easy to Use and Carry】 With this comfortable hand-held soil blocking tool,all you need to do is mixing up the soil into wet and insert the seed pins on the backside of the soil blocker,then you press the handle to get 8 cells for seed use! The size of this soil blocker is easy to carry around, it takes weight because it has good quality, and small size 8 inch high
- 【No Transplant Shock & Pot Needed】Reduce the demage to root when transplanting seeding, and help them adapt new soil well after moving form the seed tarys. This manual soil block maker allows you have soil block easiy and don’t need with plastic pots or disposable seed container any more
- 【Best Soil Block Tool for Garden】Saving your more space with this soil blocker 2 inch when planting and it is easy to transplant seeding without getting any hurt to root. Make plants grow healthier and then your garden will be flourished
Large-Scale Coco Coir
Growbycoco Coco Coir Brick(11lbs) – Premium Organic Coco Peat Brick for Garden Soil & Potting Mixes-Coconut Fiber Substrate Mixes with Potting Soil for Indoor Plants & Outdoor Plants -19 Gallons
growbycoco
- 8X+ EXPANSION -Each coco coir brick is highly compressed, expand to more than eight times its original size when hydrated ,one coir brick yielding 70-75 liters (19 gallons) of premium growing medium and our coconutcoir soil ideal for compact storage, easy transportation and for versatile gardening applications.
- LOW EC- Growbycoco coconut coir brick designed with low electrical conductivity, this coir is free of extra salts,making an this coir pith excellent for growing plants,herb plants, seedlings, vegetables, flowers, indoor house plants, indoor gardens and outdoor gardens.
- PH NEUTRAL -Low EC coco fiber compressed growing medium is washed and maintains a neutral pH level, ensuring compatibility with a wide variety of plants, including micro greens, flowers, vegetables, and hydroponic systems and perfect for indoor planters, greenhouses, and outdoor gardens.
- 100% NATURAL AND ORGANIC- Growbycoco coir sourced from sustainable coconut husks, our coir for plants is eco-friendly, renewable and organic and that is a greener, more sustainable alternative to peat moss.
- EXCEPTIONAL MOISTURE RETENTION – Growbycoco coir pith bricks absorbs and retains water efficiently while maintaining excellent drainage. Our coir soil is perfect for seed starting, container gardening, hanging baskets, garden beds, and raised planters.
- VERSATILE USAGE ACROSS APPLICATIONS- Coir for plants suitable for indoor and outdoor plants, hydroponic, micro greens,herb planters, flower pots, vegetable gardens, seed trays, and composting and coir brick supports diverse gardening needs with ease.
- SUPERIOR AERATION & DRAINAGE – Our coco coir blocks for plants enhances soil aeration and prevents compaction and allows plant roots to access oxygen while effectively draining excess water. Our cococoir potting soil mix promotes plant root growth and minimizes risks of waterlogging.
- NATURAL SOIL AMENDMENT & ENHANCER -Mix with potting soil or use as a standalone medium to improve soil structure, increase fertility, and boost nutrient retention for healthier plants. Cocopeat for plants and ideal for both indoor and outdoor gardening.
- SUSTAINABLE GROWING SOLUTION- Made from 100% renewable coconut coir that’s naturally biodegradable. Unlike peat moss, doesn’t contribute to wetland destruction, making it an eco-friendly choice for gardeners.
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 factors should I consider when choosing a potting mix for indoor houseplants?
Look for a blend that offers good drainage, aeration, and a balanced nutrient profile. Mixes with perlite, peat moss, or coconut coir help prevent waterlogging, while added fertilizer can reduce the need for frequent feeding. Also consider any special needs of your plant, such as low‑gnat formulations for sensitive species.
How does Miracle‑Gro Moisture Control Potting Mix differ from the standard Miracle‑Gro Potting Mix?
Moisture Control uses an AquaCoir formula that holds up to 33% more water and includes a wetting agent, helping prevent both over‑ and under‑watering. The standard mix provides a classic peat‑based medium with a built‑in fertilizer for up to six months. Choose Moisture Control if you want extra water retention for drought‑prone environments.
Which product is best for starting seeds and cuttings?
The Miracle‑Gro Seed Starting Potting Mix is specially formulated for rapid root development and includes extra plant food to support seedlings. Its fine texture encourages strong, healthy shoots, making it ideal for both seed sowing and stem or leaf cuttings. Pair it with a seed tray or a soil blocker for best results.
I prefer an eco‑friendly option; what are my choices?
Rosy Soil’s Aroid mix is peat‑free, uses biochar, and comes in recyclable packaging, making it a net‑carbon‑negative choice. GrowBycoco’s coco coir bricks are 100% natural, low‑EC, and sourced from sustainable coconut husks, offering a renewable alternative to peat. Both provide organic nutrition while minimizing environmental impact.
Can I use the same potting mix for outdoor container vegetables and indoor foliage?
While many mixes are versatile, the Miracle‑Gro Organic Outdoor Potting Mix is optimized for outdoor conditions with a quick‑release natural fertilizer and a peat base that supports root growth in harsher climates. For indoor foliage, a lighter mix like the Houseplant Potting Mix, which includes perlite for better airflow, is often preferable. Matching the mix to the plant’s environment helps avoid issues like root rot or nutrient deficiencies.
What value does the BlumWay Soil Blocker add to seed starting?
The BlumWay tool lets you create uniform 2‑inch soil blocks without plastic trays, reducing transplant shock and eliminating the need for disposable containers. Its stainless‑steel construction ensures durability, and the interchangeable seed pins allow you to handle different seed sizes efficiently. This can save space and improve germination rates compared to traditional seed trays.
How important is the nutrient content versus the physical structure of a potting mix?
Both are critical: nutrients feed the plant, while structure determines water movement, aeration, and root penetration. A mix rich in organic matter like worm castings provides long‑term nutrition, but if it compacts, roots may suffocate. Balancing a nutrient‑rich formula with components such as perlite, pine bark, or biochar ensures healthy growth.
Is it worth buying larger bags or bundles of potting mix?
Larger bags usually offer a lower cost per quart and reduce the frequency of repurchasing, which is convenient for gardeners with multiple containers. However, if you only have a few small pots, a smaller bag prevents waste from unused, stale mix. Consider your planting volume and storage space when deciding between single bags and multi‑bag bundles.