Comparison: Best Stonington Blend Grower’S Mix (Updated | Nov 11th)
But is it truly the best option out there? Whether you’re growing tomatoes, flowers, or herbs, choosing the right mix can mean the difference between so-so results and show-stopping growth. Let’s break down what makes Stonington stand out—and where it might fall short.
- Best for two‑bag starter: Coast of Maine Stonington Blend
- Best for four‑bag value: Coast of Maine Stonington Blend
- Best for six‑bag bulk: Coast of Maine Stonington Blend
- Best for ten‑bag power: Coast of Maine Stonington Blend
- Best for oceanic super soil: Coast of Maine Stonington Blend
- Best for complete garden kit: Coast of Maine ST1500 Stonington High Performance Growers Mix 1.5 cf with My Garden Pool 7-in-1 Soil Test Strips
- Best for certified organic mix: Coast of Maine CMSBO15 Stonington Blend Organic Growers Potting Soil Mix with All Natural Oceanic Ingredients for Planters and Pots
- Best for single bag essential: Coast of Maine Stonington Blend
Product Comparison: Best Stonington Blend Grower’S Mix
Coast of Maine Stonington Blend, 1.5 cu ft (Pack of 2) Organic and Natural Grower?s Mix for Large Container Plants

- Coast of Maine Stonington Blend, 1.5 cu ft (Pack of 2) Organic and Natural Grower?s Mix for Large Container Plants
Coast of Maine Stonington Blend, 1.5 cu ft (Pack of 4) Organic and Natural Grower?s Mix for Large Container Plants

- Coast of Maine Stonington Blend, 1.5 cu ft (Pack of 4) Organic and Natural Grower?s Mix for Large Container Plants
Coast of Maine Stonington Blend, 1.5 cu ft (Pack of 6) Organic and Natural Grower?s Mix for Large Container Plants

- Coast of Maine Stonington Blend, 1.5 cu ft (Pack of 6) Organic and Natural Grower?s Mix for Large Container Plants
Coast of Maine Stonington Blend, 1.5 cu ft (Pack of 10) Organic and Natural Grower?s Mix for Large Container Plants

Coast of Maine Stonington Blend, 1.5 cu ft (Pack of 8) Organic and Natural Grower?s Mix for Large Container Plants

- You will receive 8 (1.5 cu ft) bags per order
- Premium Super Soil for Containers – Designed for high‑performance growing in large pots and 15 gal containers.
- All‑Natural Oceanic Ingredients – Includes lobster & crab shell compost, worm castings, kelp meal, fish bone and alfalfa meal.
- Mycorrhizae‑Enhanced Root Development – Contains active mycorrhizal fungi to support strong root absorption.
- Balanced Texture, Drainage & Moisture – Coir, peat, perlite and compost deliver ideal aeration and retention.
- OMRI Listed and Nutrient‑Complete – Certified organic and formulated to sustain plants for a full season with just water.
Coast of Maine ST1500 Stonington High Performance Growers Mix 1.5 cf with My Garden Pool 7-in-1 Soil Test Strips, 20 ct. and Claw Gardening Gloves

- 🌿 Premium grower’s mix with coco coir, lobster compost & worm castings
- 🌱 Provides all essential nutrients for vigorous growth
- 💧 Retains ideal moisture while preventing root rot
- 🪴 Perfect for vegetables, tomatoes, and cannabis cultivation
- 🧤 Includes My Garden Pool Soil Test Kit & Gloves
Coast of Maine CMSBO15 Stonington Blend Organic Growers Potting Soil Mix with All Natural Oceanic Ingredients for Planters and Pots, 1.5 Cubic Feet

- CONTAINER GARDENING: The Stonington Blend Organic Grower’s Mix is a complex super soil designed for growing plants in containers and large pots
- BALANCED BLEND: Formulated to provide an ideal balance between water retention, soil texture, drainage, and aeration
- NATURAL INGREDIENTS: Formula includes mycorrhizal fungi, kelp, fishbone meal, alfalfa meal, worm castings, peat, and coir to develop strong roots
- ENCOURAGES HEALTHY GROWTH: Organic growing mix encourages healthy vegetation, big blooms, and buds
- FEATURES: Bag covers 1.50 cubic feet; Mix is OMRI Listed for organic use; Made in Canada; Dimensions (L x W x H): 19 x 26 x 6 inches; Weight: 40 pounds
Coast of Maine Stonington Blend, 1.5 cu ft, Organic and Natural Grower’s Mix, Grow Clean Mix for Large Container Plants

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 are the most important ingredients in the Coast of Maine Stonington Blend?
The blend combines oceanic organics such as lobster and crab shell compost, kelp meal, fish bone meal, worm castings, alfalfa meal, peat, and coco coir. These ingredients supply a balanced mix of nutrients, beneficial microbes, and structural support for healthy root development. The mycorrhizal fungi added to many versions further improve nutrient uptake.
How do the different pack sizes (2, 4, 6, 8, 10) compare in terms of value?
All packs provide the same 1.5 cu ft of mix per bag, so larger quantities lower the cost per cubic foot. For example, the 10‑bag pack typically offers the best price per unit, while the 2‑bag pack is convenient for small projects or first‑time testers. Consider your planting volume and storage space when choosing the size that gives you the best value.
Is the Stonington Blend suitable for growing cannabis as well as vegetables?
Yes, the blend is formulated for high‑performance growing in large containers, making it ideal for both cannabis and vegetable crops like tomatoes. Its balanced moisture retention and drainage prevent root rot, while the nutrient‑rich organic components support vigorous vegetative and flowering stages. Adding the included garden soil test kit (in the ST1500 version) can help fine‑tune pH for cannabis.
What does the mycorrhizae‑enhanced label mean for my plants?
Mycorrhizal fungi form a symbiotic relationship with plant roots, extending the root network and improving water and nutrient absorption. This results in stronger, more resilient plants and can reduce the need for supplemental fertilizers. The effect is most noticeable in larger pots where root space is limited.
How does the ST1500 Stonington High Performance Growers Mix differ from the CMSBO15 version?
Both mixes share core ingredients like coco coir, lobster compost, and worm castings, but the ST1500 includes a garden pool soil test kit and gloves, positioning it as a more complete starter kit. The CMSBO15 emphasizes its OMRI organic certification and provides detailed dimensions and weight, which can be helpful for planning container space. Performance-wise, both deliver excellent drainage and moisture balance.
Do I need to add extra fertilizer when using this organic mix?
The Stonington Blend is designed to supply all essential nutrients for most container-grown plants, so additional fertilizer is often unnecessary in the early stages. However, for heavy‑feeding crops like tomatoes or cannabis during peak flowering, a light supplement of organic liquid feed can boost yields. Always monitor plant health and adjust based on growth stage.
Can I store leftover mix for future plantings, and how should I do it?
Yes, the mix can be stored for up to 12 months if kept in a dry, airtight container away from direct sunlight. Moisture ingress can cause clumping or mold, so using sealed bags or a large plastic bin with a tight‑fit lid is recommended. If the mix feels dry, lightly mist it before the next use to restore optimal texture.
What makes the 8‑bag pack stand out compared to the other sizes?
The 8‑bag pack includes a detailed feature list highlighting premium super soil design, mycorrhizal enhancement, and a balanced texture of coir, peat, perlite, and compost. This pack is a sweet spot for serious hobbyists who need enough volume for multiple large containers without committing to the largest bulk purchase. It also often includes promotional accessories like gloves or a soil test kit in certain listings.
