Comparison: Best Potting Soil For Microgreens (Updated | Nov 11th)
If you’ve ever grown microgreens, you know the right potting soil can make all the difference between lush, vibrant greens and a sad, spindly batch. But with so many options out there—organic mixes, soilless blends, DIY recipes—it’s easy to feel overwhelmed. We’ve tested the top contenders to find which ones deliver the best germination, flavor, and growth. Whether you’re a beginner or a seasoned grower, we’ll help you pick the perfect soil to give your microgreens the healthy start they deserve.
Editor’s Choice
Best for a specific purpose
- Best for organic microgreen blend: 100% Natural Organic Microgreens Premium Potting Mix by Gardenera: Ideal Balance of Air
- Best for compact coco discs: Minute Soil – Compressed Coco Coir Fiber Grow Medium – 80 MM Pucks – 10 Pack = 2.5 Gallons of Potting Soil – Indoor Container Growing: Wheatgrass
- Best for peat-free seed starter: Seedling Seed Starter Soil Mix – Peat-Free Organic Potting Mix for Seeds
- Best for bulk coco bricks: Minute Soil Organic Coco Peat 12 Pack – Lightweight Growing Bricks Expand to 18 Gal – Potting Mix for Microgreens
- Best for organic outdoor mix: Miracle-Gro Organic Outdoor Potting Mix
- Best for premium microgreen mix: Gardenera Organic Microgreens Premium Potting Mix: Natural Ingredients for Healthy Growth and Nutrient Retention – 1 Quart
- Best for large coco discs: Minute Soil – Compressed Coco Coir Fiber Grow Medium – 100 MM Discs – 10 Pack = 4.25 Gallons of Potting Soil – Gardening
- Best for indoor water‑smart mix: Miracle-Gro Organic Indoor Potting Mix
- Best for perlite houseplant soil: Miracle-Gro Houseplant Potting Mix: Fertilized
- Best for all-purpose organic mix: Back to the Roots 100% Organic Potting Mix (Value 12 Quart) | Premium Blend | Made in The USA
Product Comparison: Best Potting Soil For Microgreens
Organic Microgreen Blend
100% Natural Organic Microgreens Premium Potting Mix by Gardenera: Ideal Balance of Air, Moisture, and Nutrients – 2 Quart
Gardenera
- ✅ Meticulously Crafted Blend (10 QUART): Carefully curated selection of Canadian peat moss, cococoir, perlite, worm castings, and lime for unparalleled microgreen growth and nutrient retention. 🌱
- ✅ Superior Quality and Sustainability: Hand-mixed in small batches to ensure consistent excellence and optimal performance, prioritizing sustainability and eco-friendly practices. ♻️
- ✅ Perfect Balance of Air and Moisture: Thoughtfully chosen ingredients create a harmonious environment, promoting robust growth and preventing waterlogged conditions. 💦
- ✅ Nutrient-Rich Microgreens: Nourish your microgreens with the finest natural ingredients, delivering essential nutrients for vibrant and flavorful greens. 🥦
- ✅ Simple and Easy to Use: Just spread the potting mix evenly in a shallow tray, sow your microgreen seeds, and watch them flourish with minimal effort required. 🌱
- ✅ Versatile Applications: Ideal for home gardeners, culinary enthusiasts, and health-conscious individuals, offering a variety of microgreens bursting with flavor and dense in nutrients. 🥗
- ✅ Enhance Your Meals: Add microgreens grown with our premium potting mix to salads, sandwiches, smoothies, and various dishes for a nutrient-packed culinary adventure. 🍽️
- ✅ Unleash Your Creativity: Create your microgreen symphony, cultivating an orchestra of kale, broccoli, radish, sunflower, and more, transforming your dishes into culinary masterpieces. 🎶
- ✅ Organic and Natural: Our potting mix is crafted with organic ingredients, free from harmful chemicals, ensuring a safe and sustainable choice for both you and the environment. 🌿
- ✅ Unveil Nature’s Symphony: Embrace the beauty of microgreen cultivation, witness the transformation of tiny seeds into vibrant, nutrient-dense superfoods, and embrace the magic of Gardenera Organic Microgreens Premium Potting Mix. ✨
Compact Coco Discs
Minute Soil – Compressed Coco Coir Fiber Grow Medium – 80 MM Pucks – 10 Pack = 2.5 Gallons of Potting Soil – Indoor Container Growing: Wheatgrass, Microgreens, Flowers – Just Add Water – OMRI Organic
Mountain Valley Seed Company
- 80 MM Minute Soil Discs – Roll of 10 – Add 1.5 cups of water to each disc to re-hydrate – Expands up to 15 times – Yields approx 4 cups of soil per disc – Full bag rehydrates to Approx 2.5 gallons of soil
- Minute Soil by Mountain Valley Seed Company is pure, untreated, raw fibrous coconut coir that is compressed into light convenient discs or blocks that quicky expand into an amazing grow medium when you add water – OMRI listed for organic production.
- CONVENIENT – Lightweight, compact and Rehydrates quickly – Just add water – Peat Free – Eco Friendly – Raw & Non-ammended (add your own fertilizer). Much easier and tidyer than hauling large bags of damp potting soil.
- BETTER GROWTH – Minute Soil provides improved water holding capacity and aeration for faster, strong plant growth, and healthier roots.
- VERSATILE – Use as straight grow medium, or add to garden soil to improve water holding capacity & aeration. Ideal for any growing use: Indoor seed starts, garden soil, flowers, herbs, house plants, vegetables, microgreens, wheatgrass & more.
Peat-Free Seed Starter
Seedling Seed Starter Soil Mix – Peat-Free Organic Potting Mix for Seeds, Cuttings, Microgreens- Enriched w/Worm Castings, Root-Boosting Biochar, Less Prone to Gnats for Germination & Propagation- 4qt
Rosy Soil
- Ideal Growing Foundation: Our seed starter soil mix is expertly formulated to enhance soil aeration, drainage, and nutrient absorption, providing the perfect environment for strong, healthy seedlings and plants to flourish. This seed starter soil supports vigorous plant development from the very beginning.
- Peat-Free Formula: Crafted from eco-conscious ingredients like biochar, worm castings, mycorrhizae, pine bark fines, sand, and compost, our seed starter mix increases fluffiness and enhances drainage. This premium seed starting potting soil mix offers a sustainable, nutrient-rich blend for optimal plant growth.
- Versatile for All Seedlings and Cuttings: Designed to meet the specific needs of all types of seedlings, cuttings, and microgreens, our seedling soil is ideal for starting vegetables, flowers, herbs, houseplants, and more. This seed starter kit provides a living soil environment tailored to nurture a wide variety of plant species.
- Easy to Use: Prepare your seed starter tray or pot with Rosy Soil Seed Starter mix, following the depth and spacing recommendations on your seed packet to avoid overcrowding. For propagating cuttings, fill a pot partially with the seed starting soil, insert the cutting, and cover it with soil, leaving an inch at the top for easy watering.
- Eco-Friendly & Resealable Packaging: Our seed starter soil comes in plastic-neutral, carbon-natural packaging designed to reduce environmental impact. The convenient 4lb resealable bag keeps your seed starting soil fresh and ready to nurture young plants while offering an eco-conscious choice for sustainable gardening.
Bulk Coco Bricks
Minute Soil Organic Coco Peat 12 Pack – Lightweight Growing Bricks Expand to 18 Gal – Potting Mix for Microgreens, Herbs, Vegetables, Flowers, Indoor Containers, Seed Trays
Mountain Valley Seed Company
- ✅ Compressed Coco Coir Bricks – Lightweight, compact growing medium made from coconut husk fiber. Expands with water for seed starting, microgreens, potting soil, and garden use.
- 🌱 Bulk Peat-Free Grow Medium – OMRI-listed coconut coir for raised beds, seed trays, houseplants, herbs, and vegetables. 6-pack expands to 9 gal, 12-pack to 18 gal, 24-pack to 36 gal.
- 💧 Water Retentive & Well-Draining – Holds moisture while improving aeration for healthy root growth. Ideal for hydroponics, potting mix, and greenhouse propagation.
- 🪴 Multipurpose Gardening Use – Use as soil or additive in planters, microgreen trays, soil blocks, and indoor containers. Suitable for flowers, sprouts, wheatgrass, and vegetables.
- ♻️ Renewable Alternative to Peat – Made from sustainable coconut coir, a biodegradable option for consistent, clean bulk growing medium in gardening and horticulture.
Organic Outdoor Mix
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)
Premium Microgreen Mix
Gardenera Organic Microgreens Premium Potting Mix: Natural Ingredients for Healthy Growth and Nutrient Retention – 1 Quart
Gardenera
- ✅ Meticulously Crafted Blend (10 QUART): Carefully curated selection of Canadian peat moss, cococoir, perlite, worm castings, and lime for unparalleled microgreen growth and nutrient retention. 🌱
- ✅ Superior Quality and Sustainability: Hand-mixed in small batches to ensure consistent excellence and optimal performance, prioritizing sustainability and eco-friendly practices. ♻️
- ✅ Perfect Balance of Air and Moisture: Thoughtfully chosen ingredients create a harmonious environment, promoting robust growth and preventing waterlogged conditions. 💦
- ✅ Nutrient-Rich Microgreens: Nourish your microgreens with the finest natural ingredients, delivering essential nutrients for vibrant and flavorful greens. 🥦
- ✅ Simple and Easy to Use: Just spread the potting mix evenly in a shallow tray, sow your microgreen seeds, and watch them flourish with minimal effort required. 🌱
- ✅ Versatile Applications: Ideal for home gardeners, culinary enthusiasts, and health-conscious individuals, offering a variety of microgreens bursting with flavor and dense in nutrients. 🥗
- ✅ Enhance Your Meals: Add microgreens grown with our premium potting mix to salads, sandwiches, smoothies, and various dishes for a nutrient-packed culinary adventure. 🍽️
- ✅ Unleash Your Creativity: Create your microgreen symphony, cultivating an orchestra of kale, broccoli, radish, sunflower, and more, transforming your dishes into culinary masterpieces. 🎶
- ✅ Organic and Natural: Our potting mix is crafted with organic ingredients, free from harmful chemicals, ensuring a safe and sustainable choice for both you and the environment. 🌿
- ✅ Unveil Nature’s Symphony: Embrace the beauty of microgreen cultivation, witness the transformation of tiny seeds into vibrant, nutrient-dense superfoods, and embrace the magic of Gardenera Organic Microgreens Premium Potting Mix. ✨
Large Coco Discs
Minute Soil – Compressed Coco Coir Fiber Grow Medium – 100 MM Discs – 10 Pack = 4.25 Gallons of Potting Soil – Gardening, House Plants, Flowers, Herbs, Microgreens, Wheatgrass – Just Add Water – OMRI
Mountain Valley Seed Company
- 100 MM Minute Soil Discs – Roll of 10 – Add 3 cups of water to each disc to re-hydrate – Expands up to 15 times – Yields approx 8.5 cups of soil per disc – Full bag rehydrates to Approx 4.25 gallons of soil
- Minute Soil by Mountain Valley Seed Company is pure, untreated, raw fibrous coconut coir that is compressed into light convenient discs or blocks that quicky expand into an amazing grow medium when you add water – OMRI listed for organic production.
- CONVENIENT – Lightweight, compact and Rehydrates quickly – Just add water – Peat Free – Eco Friendly – Raw & Non-ammended (add your own fertilizer). Much easier and tidyer than hauling large bags of damp potting soil.
- BETTER GROWTH – Minute Soil provides improved water holding capacity and aeration for faster, strong plant growth, and healthier roots.
- VERSATILE – Use as straight grow medium, or add to garden soil to improve water holding capacity & aeration. Ideal for any growing use: Indoor seed starts, garden soil, flowers, herbs, house plants, vegetables, microgreens, wheatgrass & more.
Indoor Water‑Smart Mix
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
- 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)
Perlite Houseplant Soil
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
All-Purpose Organic Mix
Back to the Roots 100% Organic Potting Mix (Value 12 Quart) | Premium Blend | Made in The USA
Back to the Roots
- 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.
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 ingredients should I look for in a potting mix for microgreens?
Microgreens thrive in a blend that provides good moisture retention, aeration, and a light nutrient base. Look for mixes that include peat moss or coco coir for water holding, perlite or vermiculite for airflow, and a modest amount of worm castings or compost for nutrients. A balanced pH (around 6.0‑6.5) helps ensure consistent germination.
How does a peat‑based mix compare to a peat‑free coco coir mix for growing microgreens?
Peat‑based mixes, like Gardenera’s Premium Potting Mix, offer excellent water retention and a slightly acidic environment that many microgreens prefer. Coco coir mixes, such as Minute Soil discs, are peat‑free, provide similar moisture control but with a more neutral pH and faster drainage, reducing the risk of mold. Choose peat if you want a ready‑made nutrient profile; choose coco coir for a sustainable, reusable option.
Which product gives the best value for bulk growers who need large quantities of soil?
Minute Soil’s 12‑pack of compressed coco coir bricks expands to about 18 gallons and is priced per expanded volume, making it cost‑effective for high‑volume growers. Gardenera’s 10‑quart premium mix also offers a generous amount but at a higher per‑gallon price due to its added worm castings and lime. For sheer volume and lower cost, the coco coir bricks are the most economical choice.
Are pre‑mixed organic blends better than raw coco coir discs for beginners?
Pre‑mixed blends, like Gardenera’s Organic Microgreens Premium Mix, simplify the process by providing a balanced recipe with nutrients already incorporated, which helps beginners avoid under‑ or over‑fertilizing. Raw coco coir discs require you to add water and optionally supplement with fertilizer, giving more control but also more steps. For ease of use and consistent results, a ready‑made organic blend is usually the safer option for newcomers.
How important is aeration and moisture balance, and which mixes excel at this?
Microgreens need a fine balance: too much water can cause damping‑off, while insufficient moisture stalls germination. Mixes that combine peat or coco coir with perlite, vermiculite, or pumice—such as Gardenera’s blend and the Seedling Seed Starter Soil—provide optimal air pockets and moisture retention. The Minute Soil discs also score high on aeration because the coir fibers create a fluffy, well‑draining matrix.
Can I add my own fertilizer to raw coco coir mixes, and what are the pros and cons?
Yes, raw coco coir is unfertilized, allowing you to tailor nutrient levels with organic or synthetic fertilizers. This flexibility can boost yields for specific microgreen varieties, but it also adds the risk of over‑fertilizing, which may cause leaf burn or nutrient lockout. If you prefer a hands‑off approach, a pre‑fertilized mix like Gardenera’s eliminates the need for extra feeding.
What sustainability factors should influence my choice of microgreens soil?
Consider whether the product uses renewable resources, such as coconut coir, which is a by‑product of the coconut industry and biodegradable. Peat‑free options like Minute Soil and Back to the Roots reduce reliance on peat, which is a non‑renewable resource. Additionally, look for mixes packaged in recyclable or minimal‑waste containers to lower the overall environmental impact.