Comparison: Best Harvest Organic Potting Soil (Updated | Nov 11th)
With so many options out there, it’s easy to feel overwhelmed. We’ve dug into the dirt so you don’t have to, testing and comparing top contenders to find which ones deliver real results. Whether you’re growing veggies, herbs, or flowers, the right soil makes all the difference—and we’re here to help you choose wisely.
- Best for peat-free premium: Back to the Roots 100% Organic Potting Mix (Value 12 Quart) | Premium Blend | Made in The USA
- Best for quick-release fertilizer: Miracle-Gro Organic Outdoor Potting Mix
- Best for weed-free natural: Organic Harvest Potting Mix Soil for Vegetables
- Best for root-boost indoor: Back to the Roots 100% Organic Indoor Potting Mix (Value 12 Quart) | Promotes Healthy Houseplant Growth| Made in The USA
- Best for water-guard indoor: Miracle-Gro Organic Indoor Potting Mix
- Best for 4x expand coco: WONDER SOIL Organic Potting Soil | Ready to Plant Coco Coir Fully Loaded with Nutrients | 3 LBS Bag Expands to 12 Quarts of Indoor Outdoor Soil for Gardens & Plants | Incl Worm Castings
- Best for biochar power blend: Wakefield Premium Biochar Blend – Organic Potting Soil for Vegetables
- Best for mycorrhiza rich: Espoma Organic Potting Soil Mix – All Natural Potting Mix For All Indoor & Outdoor Containers Including Herbs & Vegetables. For Organic Gardening
- Best for all-purpose espoma: Espoma Organic Potting Soil Mix – All Natural Potting Mix for All Indoor & Outdoor Containers Including Herbs & Vegetables. for Organic Gardening
- Best for large 2-month feed: Miracle-Gro Organic Outdoor Potting Mix
Product Comparison: Best Harvest Organic Potting Soil
Back to the Roots 100% Organic Potting Mix (Value 12 Quart) | Premium Blend | Made in The USA
- 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.
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)
Organic Harvest Potting Mix Soil for Vegetables, Herbs and Flowers, 4 Quart (Packaging May Vary) (1 Bag)
- ALL NATURAL: Made from Organic and Recycled ingredients
- INGREDIENTS: Contains Peat Moss, Wood Shavings, Composted Green Waste and Perlite
- CONVENIENCE: No need to remove weeds
- SAFE: Does not contain human or animal waste
Back to the Roots 100% Organic Indoor Potting Mix (Value 12 Quart) | Promotes Healthy Houseplant Growth| Made in The USA
- FORMULATED FOR INDOOR USE: Our Potting Mix contains organic yucca extract that aids in retaining moisture in the soil whichs 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
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)
WONDER SOIL Organic Potting Soil | Ready to Plant Coco Coir Fully Loaded with Nutrients | 3 LBS Bag Expands to 12 Quarts of Indoor Outdoor Soil for Gardens & Plants | Incl Worm Castings, Perlite
- NUTRIENT RICH & INDOOR/OUTDOOR FAST GERMINATION… Wonder Soil Premium Organic Potting Soil Mix is the only dry compressed coco coir mix with added amendments of worm castings, mycorrhizae, kelp, perlite and more! Grow your plants faster with stronger roots! Peat free, all natural, family and pet safe!
- A LITTLE DOES A LOT… your little BIG bag of compressed indoor potting soil & garden soil for outdoor plants expands to 4 TIMES THE SIZE when mixed with water; easy to carry & saves vital shed space.
- PRE-MIXED & READY TO USE ORGANIC POTTING MIX … Pre-mixed and ready to use organic potting soil and garden soil mix to help make your gardening or hobby growing a breeze. Simply transplant your desired plants into their new container and add our soil mix or pour our soil mix and plant your seeds.
- WATER RETENTION & DRAINAGE… Coco coir has excellent water retention with dependable drainage and aeration in the root zone. Save up to 50% of water, fertilizer, and seed!
- HEAVY DUTY RESEALABLE BAG… Use what you need and save the rest for later! Keeping your planting soil dry and safe!
Wakefield Premium Biochar Blend – Organic Potting Soil for Vegetables, Tomatoes & Gardens – Potting Mix Enriched with Humic Acid & CarbonBoost – Versatile Top Soil for Indoor & Outdoor Plants-4quarts
- Engineered for Superior Garden Performance: Wakefield’s premium potting soil with biochar, for outdoor plants with Humic acid, and our proprietary CarbonBoost technology, delivering optimal conditions for vibrant, sustained growth. Ideal for everything from raised beds to patio containers, this advanced formula supports healthy root systems whether you’re cultivating juicy tomatoes or leafy herbs.
- Enhanced Root Health and Nutrient Absorption: Formulated as a powerful soil amendment and effective soil conditioner, this advanced biochar blend supports healthy microbial ecosystems for optimized nutrient uptake and improved aeration. Whether you’re cultivating hardy vegetables or delicate herbs, it strengthens root development and enhances long-term fertility. Perfect for gardeners looking to elevate top soil for garden quality or enrich topsoil for vegetable garden beds.
- Smart Water Retention Meets Drainage Balance: Designed with advanced hydration control, this organic vegetable soil helps maintain ideal moisture levels while preventing overwatering. A great fit for container gardening and raised beds, it also works as a reliable soil mixer for sensitive environments. Use it indoor or outdoor, this blend functions beautifully as potting soil for plants.
- 100% Organic, Eco-Conscious Formula: Crafted without synthetic additives, this blend provides a sustainable, chemical-free base for clean cultivation. Ideal for anyone growing vegetables and herbs at home. It performs exceptionally as a gardening soil for vegetables and supports vibrant harvests. Whether you’re using it as a nutrient-rich indoor soil potting mix or as dependable outdoor potting soil, it delivers lasting results.
- Versatile, All-Purpose Growing Medium: From raised beds to balcony containers, this blend adapts effortlessly to diverse planting styles. Whether you’re cultivating with potting soil for outdoor plants, enriching topsoil in open plots, or managing delicate herbs indoors, Wakefield delivers consistent performance. It’s equally effective as indoor plant soil and supports lush growth in compact setups requiring high-quality indoor potting soil.
Espoma Organic Potting Soil Mix – All Natural Potting Mix For All Indoor & Outdoor Containers Including Herbs & Vegetables. For Organic Gardening, 2 Cubic Foot bag. Pack of1
- FOR USE ON: Not just an indoor potting soil, this can also be used as a potting soil for outdoor plants and is a great soil mix for vegetables, herbs & all other container plants & flowers.
- CONTAINS: This organic soil for plants & vegetables is a rich blend of sphagnum peat moss, humus & perlite enriched with earthworm castings, alfalfa meal, kelp meal & feather meal
- MYCO-TONE: A proprietary blend of endo & ecto mycorrhizae.
- WHEN TO USE: Any time planting containers, whether starting a new plant or transplanting into a larger container. Plants require regular re-potting and fresh planting soil for optimum growth
- ORGANIC GARDENING: Contains a rich blend of only the finest natural ingredients. No synthetic plant foods or chemicals are used.
Espoma Organic Potting Soil Mix – All Natural Potting Mix for All Indoor & Outdoor Containers Including Herbs & Vegetables. for Organic Gardening, 4qt. Bag. Pack of 1
- FOR USE ON: Not just an indoor potting soil, this can also be used as a potting soil for outdoor plants and is a great soil mix for vegetables, herbs & all other container plants & flowers.
- CONTAINS: This organic soil for plants & vegetables is a rich blend of sphagnum peat moss, humus & perlite enriched with earthworm castings, alfalfa meal, kelp meal & feather meal
- MYCO-TONE: A proprietary blend of endo & ecto mycorrhizae.
- WHEN TO USE: Any time planting containers, whether starting a new plant or transplanting into a larger container. Plants require regular re-potting and fresh planting soil for optimum growth.
- ORGANIC GARDENING: Contains a rich blend of only the finest natural ingredients. No synthetic plant foods or chemicals are used.
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)
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 should I look for when choosing an organic potting mix for vegetables and herbs?
Focus on ingredients that promote drainage and nutrient retention, such as peat moss, coir, perlite, and added organic amendments like worm castings or mycorrhizae. Look for a mix that balances pH with limestone or dolomitic lime, and consider moisture‑control additives like yucca extract. A peat‑free formulation can reduce environmental impact while still providing a light, airy texture.
How does a peat‑free mix like Back to the Roots compare to traditional peat‑based options?
Peat‑free mixes use upcycled plant material and wood fines, offering a lighter carbon footprint and often better aeration than pure peat. They typically include moisture‑regulating agents such as yucca extract, which can help prevent over‑watering. Traditional peat mixes may retain more water, which is beneficial for some outdoor containers but can lead to root rot in indoor settings.
Is there a noticeable difference between indoor‑specific and outdoor‑specific organic mixes?
Indoor mixes, such as Back to the Roots Indoor Potting Mix, often contain added mycorrhizae and moisture‑retention agents to support houseplants and reduce pest issues. Outdoor mixes, like Miracle‑Gro Organic Outdoor Potting Mix, usually have a quick‑release natural fertilizer to feed plants through a growing season and may include more robust peat for weather resilience. Choose indoor mixes for houseplants and seedlings, and outdoor mixes for garden beds and patio containers.
Which product offers the best value for a large garden project?
Miracle‑Gro Organic Outdoor Potting Mix provides a high volume (25 qt.) that can fill three 10‑inch containers, making it cost‑effective for larger beds. Its quick‑release fertilizer feeds plants for up to two months, reducing the need for additional feed. If you prefer a peat‑free, environmentally friendly option, Back to the Roots 12‑qt. value pack offers premium ingredients but may require a larger purchase to match the same coverage.
Do any of these mixes include beneficial microbes, and why does that matter?
Yes, several mixes contain mycorrhizal fungi or worm castings, such as Back to the Roots Indoor Mix and Espoma Organic Potting Soil, which enhance root development and nutrient uptake. These microbes create a symbiotic relationship with plant roots, improving water efficiency and disease resistance. Including such amendments can lead to healthier, faster‑growing plants, especially in sterile potting environments.
How important is the inclusion of a built‑in fertilizer in an organic potting mix?
A built‑in natural fertilizer, like the quick‑release blend in Miracle‑Gro mixes, can simplify care by providing nutrients for the first few weeks or months after planting. However, if you prefer full control over feeding schedules, a fertilizer‑free mix such as Wonder Soil or Back to the Roots lets you add organic feeds as needed. Consider your gardening style and how often you plan to fertilize when selecting a product.
Are any of these potting soils safe for pets and children?
Back to the Roots Indoor Potting Mix and Wonder Soil specifically note they are pet‑ and people‑safe, containing no animal waste or harmful chemicals. Espoma and Wakefield blends also emphasize all‑natural ingredients without synthetic additives, making them suitable for households with pets or kids. Always verify that the product is labeled as safe and keep containers sealed to prevent accidental ingestion.