Comparison: Best Blended Organic Compost (Updated | Nov 11th)
If you’re on the hunt for the **best blended organic compost**, you’re not just gardening—you’re building life from the ground up. With so many options out there, it’s easy to feel overwhelmed. Is one blend really better than another? Whether you’re growing tomatoes or tending a lush lawn, we’ll help you find the perfect compost that works with nature, not against it.
- Best for odor-free blend: Michigan Peat Compost and Manure Blend
- Best for chitin-rich soil: Coast of Maine Quoddy Blend
- Best for mushroom power mix: Espoma Organic Mushroom Compost Blend. Combines Rich Mushroom Compost with Aged Forest Products to Make The Perfect Soil Conditioner. 0.75 Cubic Foot Bag – Pack of One
- Best for fast compost boost: Espoma Organic Compost Starter; All-Natural Composing Aid Helps Break Down Organic Matter to Make Rich Compost for Organic Gardening. 4 lb. Bag; Pack of 1
- Best for low-odor nutrient: R&M Organics Premium Organic Compost
- Best for rapid granular starter: Jobe’s Organics Fast Acting Granular Fertilizer Compost Starter
- Best for lobster‑crab gourmet: Espoma Organic Land and Sea Gourmet Compost with Lobster & Crab Meal; the Best of Both Worlds! Gourmet Planting Mix for Vegetables
- Best for pure cow manure: Espoma Organic Cow Manure Compost Blend – 1 Cubic Foot Bag. Soil Amendment & Fertilizer for use When Planting Vegetables
- Best for biochar super blend: Organic Mechanics Biochar Blend Soil Amendment – 1 Cu Ft – Lifetime Amendment with Biochar
- Best for omri certified mix: Ribbon Organics OMRI Certified Organic Compost Size: 7.9 Gallons
Product Comparison: Best Blended Organic Compost
Michigan Peat Compost and Manure Blend, Garden Magic Mix with Odor-Free Blend, 40 Lbs – Outdoor Lawn and Gardening Mixture with Nutrients and Minerals for Soil Potting and Planting
- Organic Compost Blend: Enhance the nutrient content and soil quality of lawns and raised garden beds with this organic blend, promoting healthy plant growth and soil vitality
- Ready-to-Use Mixture: Pre-prepared with odorless organic reed sedge peat and composted animal manure, this blend is ready to use immediately for all your gardening needs
- Essential Nutrients for Plant Growth: Packed with vital nutrients, this blend supports the healthy growth of flowers, vegetables, and grass, ensuring strong, vibrant plants
- Versatile for Gardening: Perfect for improving potting soil in planters or raised beds, making it an ideal choice for gardeners enhancing their container gardening projects
- Convenient 40-Pound Bag: Each 40-pound bag covers approximately 0.75 cubic feet, providing ample material for small-scale gardening and soil enrichment tasks
Coast of Maine Quoddy Blend, 1 cu ft (Pack of 2) Organic and Natural Compost Blend with Lobster and Crab – Improves and Revitilizes Soil
- It’s known for its dark-brown, complex soil texture that drains well.
- made with compost, sphagnum peat moss, aged bark, and chitin-rich lobster and crab meal.
Espoma Organic Mushroom Compost Blend. Combines Rich Mushroom Compost with Aged Forest Products to Make The Perfect Soil Conditioner. 0.75 Cubic Foot Bag – Pack of One
- FOR USE ON: Use for planting vegetables, flowers, trees, shrubs, herbs, and Berries
- CONTAINS: Combines rich mushroom compost with aged forest products to make the perfect soil conditioner
- WHEN / HOW TO USE: Use at time of planting to improve poor soils; Mix or rototill compost blend with the existing soil to a depth of 4-6 inches
- AVAILABLE: Packaged in 0.75 cubic foot bag
- MADE IN THE USA: Product of the Espoma Company
Espoma Organic Compost Starter; All-Natural Composing Aid Helps Break Down Organic Matter to Make Rich Compost for Organic Gardening. 4 lb. Bag; Pack of 1
- FOR USE ON: Add to the compost pile or tumbler to make rich compost, nature’s original soil conditioner
- CONTAINS: Contains ingredients specially cultured to speed the decomposition of difficult to compost organic matter. These are combined with the proper energy sources and pH balancers to assure composting success.
- WHEN TO USE: Add Compost Starter any time you are adding organic materials to the compost maker. Use a simple ratio of one cup per 16 cubic feet of material to compost
- ORGANIC GARDENING: Contains a rich blend of only the finest natural ingredients. No synthetic plant foods or chemicals are used.
- MADE IN THE USA: Product of the Espoma Company. The leader in natural organics since 1929
R&M Organics Premium Organic Compost
- All-purpose fertilizer. Derived from 100% dairy cow manure, our compost helps improve your soil by bringing needed nutrients that are often depleted after your harvests. Ideal for fruits and vegetables (tomatoes, zucchini, oranges, peaches, avocados, lemons, etc.), flowers (roses, tulips, orchids, marigolds, sunflowers, etc.), Lawns, and trees.
- Quarter inch, it’s a cinch. Thanks to the compost’s high nutrient value, all it takes is roughly a quarter inch layer to the base of existing gardens, plants, or lawns for results to show. If you have new projects like replanting you can add slightly more to mix in with new soil.
- Low odor. Our organic compost goes through a complete composting process. During the composting process, the compost is getting aerated constantly helping burn out bad bacteria and potential weed seed from making its way through. The end result is an earthy and soily scent making it ideal for indoor use.
- Moisture retention. The compost helps lock in and keep your plants or gardens moist for longer periods of time. This will help reduce the amount of times you will need to walk out and water, potentially saving you time and money.
- Bag size. Our 10lb bag may sound small, but it packs a big punch. The bag size will make it convenient to move around, store for future use, or use in one application.
Jobe’s Organics Fast Acting Granular Fertilizer Compost Starter, Easy Plant Care Compost Accelerator, 4 lbs Bag
- Organic compost starter speeds up the composting process and is ideal for outdoor compost piles
- Compost accelerator is formulated with a 4-4-2 NPK to provide vegetables, plants, and flowers nutrients they need for a high yield and vibrant foliage
- Jobe’s organic compost starter contains no synthetic chemicals and is OMRI listed for organic gardening by the USDA
- Compost starter is easily applied and should be used every 4-6 weeks or as needed
- Jobe’s Organics provides a wide variety of plant fertilizer and soil amendments to give gardens the right amount of nutrients without over fertilizing
Espoma Organic Land and Sea Gourmet Compost with Lobster & Crab Meal; the Best of Both Worlds! Gourmet Planting Mix for Vegetables, Flowers, Trees & Shrubs. 1 Cubic Foot Bag
- FOR USE: Use when planting or transplanting to improve native soil. Add to planters and window boxes to invigorate container mixes
- CONTAINS: This organic soil mix for all plants & vegetables is a rich blend of natural and organic ingredients enriched with both lobster and crab meal
- MYCO-TONE: A proprietary blend of endo & ecto mycorrhizae
- WHEN TO USE: Any time planting in the garden or in containers, whether starting a new plant or transplanting
- ORGANIC GARDENING: Contains a rich blend of only the finest natural ingredients. No synthetic plant foods or chemicals are used
Espoma Organic Cow Manure Compost Blend – 1 Cubic Foot Bag. Soil Amendment & Fertilizer for use When Planting Vegetables, Flowers, Trees & Shrubs.
- CONTAINS – Dehydrated cow manure with aged forest produts that help improve poor soil conditions and promote better plant growth
- ALL NATURAL- Organic blend for everything you grow – from vegetables & flowers to trees & shrubs
- FEEDS: Provides all three major plant nutrients; 0.5-0.5-0.5 fertilizer analysis
- IMPROVES – the soil’s moisture holding capacity and aeration
- MADE IN THE USA: Product of the Espoma Company. The leader in natural organics since 1929
Organic Mechanics Biochar Blend Soil Amendment – 1 Cu Ft – Lifetime Amendment with Biochar, Compost, Worm Castings & Micronutrients for Bigger Plants, Higher Yields, and Healthier Soil
- Grow Bigger, Tastier Crops – Biochar Blend improves plant health, boosts yields, and delivers long-term benefits with just one application
- Complete Nutrient Formula – Contains biochar, compost, worm castings, bone char, azomite, zeolite, alfalfa meal, and kelp meal for rich, living soil in containers, raised beds and gardens
- Supports Soil Biology & Root Health – Compost and worm castings encourage beneficial microbes; bone char provides phosphorus and calcium; minerals nourish roots and microbes
- Microbe & Mineral Rich – Provides calcium, phosphorus, trace minerals, and organic compounds that fuel plant and soil health
- Easy-to-Use Soil Amendment – For raised beds and containers, mix in at a 10% rate by volume with your preferred growing media, such as our Container Blend Potting Soil or Cocodelphia. For in-ground applications, 1 Cu Ft covers 24 Sq Ft, at 0.5” application depth
- Ready-to-Use On All Plant Types – For optimal growth, add desired fertilizer for vegetative and flowering phase
Ribbon Organics OMRI Certified Organic Compost Size: 7.9 Gallons, 32-35 Pound Bag
- Improves soil structure & aeration
- Promotes water retention
- OMRI Certified for Organic Use
- Safe for use at any concentration
- Pairs wonderfully with worm castings & other soil builders
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 a blended organic compost?
Focus on the primary ingredients, such as peat, mushroom compost, or animal manures, because they affect nutrient balance and soil texture. Check the nutrient analysis (N-P-K) and any added amendments like lobster meal or biochar for specific plant needs. Also consider the bag size and coverage to ensure you get good value for the area you plan to treat.
How does a peat‑based blend compare to a mushroom‑based blend?
Peat blends, like Michigan Peat Compost, provide excellent water retention and a light, airy texture, making them ideal for container gardening and raised beds. Mushroom compost, such as Espoma’s blend, offers higher organic matter and a richer microbial community, which can improve soil fertility over time. Choose peat for quick moisture management and mushroom compost for long‑term soil health.
Are compost starters worth buying instead of pre‑mixed compost?
Compost starters, like Espoma Organic Compost Starter or Jobe’s Fast Acting Granular Fertilizer, accelerate the breakdown of organic material in your own compost pile, reducing the time to produce usable compost. They are useful if you already have a compost system and want to speed up the process. If you need an immediate soil amendment, a ready‑to‑use blend is more convenient.
Which product gives the best value per cubic foot?
Coast of Maine Quoddy Blend offers 1 cu ft per bag in a pack of two, providing a large volume at a competitive price. Espoma’s 0.75 cu ft mushroom compost and Ribbon Organics’ 7.9‑gallon (≈0.95 cu ft) bag are slightly smaller but often priced similarly, making the Quoddy Blend a strong value choice for larger projects.
What are the benefits of added marine meals like lobster or crab?
Marine meals, found in blends such as Coast of Maine Quoddy and Espoma Land and Sea Gourmet, supply calcium, phosphorus, and trace minerals that support strong root development and disease resistance. They also contribute to a more complex soil food web, encouraging beneficial microbes. This can be especially helpful for fruiting plants and heavy‑feeding vegetables.
How important is odor when selecting a compost blend?
Low odor is a key comfort factor for indoor or close‑quarter gardening; blends like Michigan Peat Compost and R&M Organics Premium Compost are formulated to be virtually odor‑free. Odor often indicates incomplete composting, which can attract pests. Choosing a low‑odor product ensures a pleasant gardening experience and safer indoor use.
Can I use a compost blend for both lawn and garden applications?
Yes, many blends are versatile; for example, Michigan Peat Compost and R&M Organics Premium Compost are suitable for lawns, flower beds, and vegetable gardens. However, lawn-specific needs may prioritize quick greening and turf durability, while garden applications benefit from higher organic matter and nutrient diversity. Check the label for recommended uses to match your project.
What extra amendments should I consider adding to a basic compost blend?
Supplementing with biochar (as in Organic Mechanics Biochar Blend) can improve long‑term soil structure and carbon sequestration. Adding worm castings or kelp meal boosts microbial activity and micronutrients. Pairing a basic blend with these amendments tailors the soil to specific crops and can enhance water retention and nutrient uptake.