Choosing what soil/medium to use for growing your marijuana plants is arguably the most important decision you’ll make. Choose the wrong blend and you could be signing yourself up for weeks of measuring, flushing, and writing into chat forums for help! Choose the right one, and your experience instead could be filled with sharing photos on Social Media and harvests that seem never ending.
NEW for 2023
Stonington Blend™ Organic & Natural Aeration Formula is a blend of coir and perlite has been a must have for hydroponic growers for years. At Coast of Maine, we have developed our own unique blend by adding lobster meal and kelp meal bringing life and energy to this popular growing media. The perfect base mix to help you create your own custom soil.
- 70/30 Coco-Perlite
- Enriched with Lobster Meal & Kelp Meal
- Base mix to help you create your own custom soil
- Improves airflow around the root zone
- Made with premium ingredients
For those who want to mix
your own soil.
Cultivators have raved about the efficacy of Stonington Blend Grower’s Mix. Many still want to blend and create their own “super soil.” Below you will find everything you need to do just that!
If you’d like a simple, successful experience, choose Stonington Blend Grower’s Mix. We’ve done all the hard work for you! We’ve taken into account all of the necessary factors for your cannabis plants to perform at their absolute best:
- What is the best pH level?
- What are the water retention requirements?
- What is the best nutrient makeup?
- What is the best timing for the nutrients to release?
- What will ensure we provide the cleanest taste?
- What is the plant’s preferred soil texture?
- What is the plant’s preferred soil drainage/moisture level?
Coast of Maine’s Stonington Blend is a pre-mixed “super soil” that contains EVERYTHING your cannabis plants need for a full grow cycle.
(When growing in 15 gallons of soil or more, YOU ONLY NEED TO ADD WATER!)
STONINGTON BLEND Premium Grower’s Mix – OMRI Listed for Organic Use, Stonington is a complex “super soil” that was designed completely with cannabis plants in mind. Rich in nutrients and formulated with amendments designed to boost budding, blooming and root development, Stonington Blend™ also provides the ideal balance between water retention, soil texture, drainage and aeration in a consistent growing medium. It includes mycorrhizal fungi, a combination of kelp, fish bone and alfalfa meals, worm castings, peat, coir, and lobster compost. On its own, it is enough to feed a single cannabis plant through a full grow cycle in a 15-gallon container. Just add water!
There is no need for expensive nutrients. This blend will save you time and money and give you tremendous results! The very best soil for your backyard grow!
Available in 1.5 cf bags, or in 60 cf Supersacks!
Contact us – for supersack pricing and delivery information
Successful cannabis plants begin with the best organic soil that growers can buy!
Over the last decade, we keep developing for knowledgeable organic growers concerned with where and how their mediums are made. We are confident that this is the best compost blend we have produced in nearly twenty years of composting marine residuals along the Coast of Maine.
Our “Super Soil” grows big, healthy buds. Just add water!
OMRI listed for organic use, is a complex “super soil” that was designed completely with cannabis in mind. It is rich in nutrients, and formulated with amendments designed to boost budding, blooming and root development. Stonington Blend™ also provides the ideal balance between water retention, soil texture, drainage, and aeration in a consistent growing medium. This blend is a rich mixture of horticultural grade sphagnum peat, coco fiber (coir), lobster compost, composted dark bark, dehydrated hen manure, perlite, worm castings, and a mixture of meals (kelp, alfalfa, fish bone), mycorrhizae, and dolomitic limestone to adjust pH.
At Coast of Maine, we know cultivators want to harvest the cleanest cannabis possible. The diversity and density of the amendments we incorporate in Stonington Blend™ Grower’s should enable a cannabis plant to grow to its fullest potential when planted in a 15-gallon container using a water only method. No flushing needed!
Choosing the right container for your cannabis plant.
When it comes to pots, your cannabis wants one thing and one thing only: a safe, healthy place for root development. Without healthy roots, your cannabis will never thrive. Roots are in charge of water retention, nutrient absorption, anchoring the plant, and also facilitate vegetative growth. All of these functions must be considered when choosing a container.
Autoflower Cannabis Grow Cycle
For a root system to develop and thrive, it will need the following:
- Drainage: Water retention is paramount for healthy plants—without it, your cannabis will wither and die. But too much water will waterlog your plant and lead to root rot, killing roots.
- Oxygen: Plant roots require oxygen to function properly. Choose a container that facilitates enough oxygen for root development without overexposing them to the elements—containers do this though various styles of perforation.
- Nutrients: Roots require optimal conditions for nutrient absorption to occur. This includes pH balance, optimal temperatures, and nutrient availability.
- Space: Roots need plenty of space to branch out. A container that is too small will cause it to become rootbound and choke the plant.
Why choose autoflowers over the regular plants? Autoflowers are small, they grow fast, produce big yields, and have amazing resistance to mold, pest and insects, plus they can flower under any light cycle.
Apart from the short strains, there are also bigger, heavier auto strains that will still flower automatically, and these are called the “SUPER” autoflowering plants.
– Typically auto plants are going through veg cycle weeks 1-3 or 4
– Typically flowers between weeks 5-8 or sometimes 12 depending on strain
Veg Feeding
5-10 gallon pots = 1/4 cup Stonington plant food once, at start of week 3
15-20 gallon pots = 1/2 cup Stonington plant food once, at start of week 3
Add Stonington Blend™ Organic Plant Food then scratch or scrape into the top few inches of the soil and provide moderate water.
Flower Feeding
5-10 gallon pots = 1/4 cup fish bone meal once at start of week 5 or 6, if you go 12 weeks provide a second feed at start of week 9 or 10
15-20 gallon pots = 1/2 cup fish bone meal once at start of week 5 or 6, if you go 12 weeks provide a second feed at start of week 9 or 10
Add Fish Bone Meal then scratch or scrape into the top few inches of the soil and provide moderate water.
Click here to download Auto Flowering Instructions
Click here to download Nutrient Feeding Schedule
Click to view our Cannabis Grow Catalog
Shop Now for Cannabis Essential Products:
A blend of coir and perlite has been a must have for hydroponic growers for years. At Coast of Maine, we have developed our own unique blend by adding lobster meal and kelp meal bringing life and energy to this popular growing media.
- Peat Free.
- 70% Coconut coir/30% perlite.
- Increased aeration and drainage.
- Plant directly in this blend.
- For indoor and outdoor containers.
OMRI Listed, Available in 1.5cf bags and 60cf supersacks!
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$24.99
The Very Best Veg Stage! Stonington Blend was created specifically for growing Cannabis. Rich in nutrients and formulated with amendments designed to boost budding, blooming and root development, this complex “super soil” will take your plants growing in the vegetative stage to the next level! Designed for high performance growing in containers and large pots, this blend incorporates mycorrhizal fungi, kelp, fish bone and alfalfa meals, worm castings, peat, coir and lobster compost. For best results, grow in 15 gallon containers.
OMRI Listed, Available in 1.5cf bags and 60cf supersacks!
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$30.99
It’s All About That Base! – Bar Harbor Blend Organic Potting Soil is perfect for growers who want to blend their own soil mix and require a basic potting soil that is both high quality and organic.
Made with premium organic ingredients such as lobster, kelp, compost, perlite and sphagnum peat.
OMRI Listed, Available in 4 sizes and Super Sacks!
8qt, 16qt, 1cf, 2cf, and 60cf tote
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from $9.99
Simply the best! – Seeds are very sensitive to nutrients, and germinating them in a nutrient-rich environment can actually cause them damage. Sprout Island Blend Organic Seed Starter has only a mild starter charge from the worm castings, mycorrhizae and kelp, so the seeds won’t get overwhelmed. Outstanding results! It is ready to use in cell packs or flats.
OMRI Listed, Available in 3 sizes and Super Sacks!
8qt, 16qt, 2cf, and 60cf tote
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from $6.99
Fine Dining for Your Plants – Stonington Blend Organic Plant Food – (5-2-4) with 4% Calcium is much more than just food for your plants. It is also a “biostimulant.” Biostimulants act on the plant through different pathways to improve crop vigor, yields, quality and post-harvest shelf life. It is made with a blend of lobster, crab, fish and kelp meals PLUS, worm castings and other important natural ingredients that are all carefully mixed to ensure a consistent aggregate size. Can also be used it to super charge the biological activity of your soil after your grows.OMRI Listed.
Available in 4lb bags
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$15.99
Nature’s Finest Soil Conditioner! – Wiscasset Blend Earthworm Castings have a coffee ground like texture and are completely odorless. They contain thousands of species of soil bacteria, amoeba, protozoa, fungi and nematodes that digest organic material and make soil nutrients more readily available to plant roots. These beneficial minerals instantly boost plant health, and are 100% safe to use on ANY type of plant! Simply top dress your cannabis plants every 3-4 weeks to provide organic microbiology. Also great for making a compost tea!
Available in 8qt bags
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$18.99
Squidtastic Results! – Liquid Squid for Indoor Plants – (2-3-0) is a truly remarkable fertilizer made entirely of squid. Intended to promote budding and blooming, this concentrated fertilizer also enriches the soil with plant-ready minerals, giving your cannabis plants a significant boost! Great for greenhouse and hydroponic systems and both indoor and outdoor applications. Once diluted, it can be watered-in or applied as a foliar spray. It is made from longfin inshore squid using a unique enzymatic cold digestion process.
Available in 1qt
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$20.99
For Big Buds & Blooms! – Fish Bone Meal Organic Plant Food – (5-13-0) with 18% Calcium, is an exceptional organic fertilizer ideal for budding and blooming cannabis plants. Made from Pacific Whiting bones that are dehydrated and ground into meal, it is an excellent natural source of phosphorus, calcium, nitrogen, essential minerals and trace elements. It initiates strong root growth, promotes more budding and big blooms!
OMRI Listed, Available in 3lb bags
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$17.99
For Greening & Leafing ! – Lobster Meal Organic Plant Food – (6-2-0) with 8% Calcium is made entirely of chitin-rich lobster and crab shell, this is the ideal organic fertilizer for outdoor containers, vegetable, herb and flower gardens. Natural nitrogen and calcium help promote strong stem growth, healthy green foliage and vigorous roots.
OMRI Listed, Available in 4lb bags
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$17.99
Kelp Your Plants Out! – Kelp Meal Organic Plant Food – (1-0-1)
100% dehydrated Norwegian Kelp (common seaweed), a source of trace quantities of macro and micro-nutrients that will help promote healthier plants and improve crop yields. Because of this high mineral content, seaweed stimulates soil bacteria helping to increase soil fertility. It also is hydrophilic, meaning that it holds water, which is essential for newly planted containers.
Available in 4lb bags
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$17.99
Great for Your Outdoor Grows ! – Castine Blend, Organic Raised Bed Mix is an enriched blend of fully cured, locally-sourced compost, peat, biochar, worm castings, dehydrated poultry manure, kelp meal, lobster meal, greensand, biochar, lime and mycorrhizae. This bag is teeming with microbial diversity and is the perfect base growing media for cannabis in your outdoor grow, raised bed or super-sized container. Add our fish bone meal two weeks before flower, and get ready for the harvest of a lifetime!
OMRI Listed, Available in 1cf and 2cf bags and 60cf supersacks!
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from $12.99
Need a more economical soil for your outdoor grow?
Try our Castine Blend!
Make your outdoor grow more economical and explosive with our OMRI Approved Castine Blend Organic Raised Bed mix.
If you are using raised beds or supersized containers for your outdoor grow, Castine Blend Raised Bed mix may be the right choice for you!
A balanced blend of manure compost, worm castings, lobster and kelp meal, mycorrhizae, greensand and biochar this 2 cubic foot bag of microbial diversity is the perfect base growing media for cannabis.Add our fishbone meal two weeks before flower, and get ready for the harvest of a lifetime! …Also perfect for no till growing!
Frequently Asked Questions:
Q: When germinating my seeds, can I use the Stonington Blend Grower’s Mix in a solo cup and transplant, or do I need to use the seed starter?
A: We have heard from growers that they have had success with germination in Stonington Blend, but we really don’t recommend it. Seeds are very sensitive to nutrients, and germinating them in a nutrient-rich environment can actually cause them damage. Our seed starter (Sprout Island Blend) was specifically designed for germination and rooting plant cuttings. It has only a mild starter charge from the worm castings, mycorrhizae and kelp, so the seeds won’t get overwhelmed.
Q:Do I have to pH my water?
A: In most cases, no, you don’t have to pH the water. But, it is helpful to know if it is at least in the target range, because the pH level outside of the preferred range can adversely affect how your plants take on nutrients/minerals, and how easily they are made available to the roots. Cannabis likes slightly acidic soil. (preferably 6.0-6.8 – We target Stonington Blend to be a 6.5 pH) Ideally you would want your water to be in that range too. That way you can confidently know your plant is getting all of the nutrition it needs from our mix.
A more useful way to gauge what is actually going on in the soil is to test the pH of your run-off rather than the pH of the water you put in. The run-off will contain any salts that might be building up in the soil and alert you to possible problems before they occur.
Tip If you are using tapwater,let it sit in a bucket or reservoir for a few days to allow it to dechlorinate, then check the pH to make sure it is within the required range.
Q: Is this a “hot soil” for the base of the plant?
A: No. Because of Coast of Maine’s composting techniques and the way we allow the amendments to settle before we bag the soil, Stonington Blend Grower’s Mix is gentle enough to be right up against the plant.
Q:Can you ship Stonington to Canada?
A: At this time we do not ship outside of the US.
Best Cannabis Soil EVER. Best Value Grow Mix. Best Super Soil for Marijuana. Better than Fox Farm Ocean Forest.
Coast of Maine is a boutique soil mix brand. Their Stonington Grower’s Mix is intended for growers that don’t want to spend additional money on pH monitors and associated products.
Coast of Maine’s Stonington Grower’s Mix is a stand-alone organic soil mixture that contains mycorrhizae, kelp meal, fishbone meal, lobster compost, alfalfa meal, and worm castings. This organic soil mix is jam-packed with everything your plants need to thrive.
And, all of these high-quality ingredients deliver a hearty harvest of aromatic and cannabinoid-rich flowers come harvest time.
Although Coast of Maine’s Platinum Grower’s Mix is expensive, it performs exceptionally well. This is one of the best soil mixes for cannabis we’ve seen, and it’s highly suitable for both beginners and professionals alike.
High-quality organic ingredients. No need to pH adjust. No supplements needed. Grows cannabis plants from seedling to harvest.
