Organic Soil Amendments, Mulch, and More
Coast of Maine Organic Products was founded in 1996 with the simple idea that a healthy planet needs healthy soil to sustain life. From this idea, a love of gardening and a commitment to sustainable practices, Coast of Maine Organic Products has grown to offer what we believe are the most unique and effective organic soil amendments and mulch available.
Our Soil Improvement Products
Soils, mulches and fertilizers
available locally
as well as online!
Store Locator
Find our organic soils,
composts & fertilizers at
your favorite garden center!
Read our Blog
Get great advice and tips
on how to grow the
BEST organic garden!
Video Library
Watch our educational
"How-to" videos and learn
about our organic products!
Shop For Products by Category
Soils & Compost
Shop by category for Coast of Maine Soils & Composts
Mulch
Shop by category for Coast of Maine Mulch Products
Fertilizers & Amendments
Shop by category for Coast of Maine Fertilizers & Amendments
For Growing Cannabis
Shop for Growing Cannabis with Coast of Maine Products
Featured Products
Liquid Squid Fertilizer for Indoor Plants
$20.99Liquid Squid Fertilizer for Indoor Plants ( 2-3-0 )
Promotes budding and blooming. This concentrated fertilizer also enriches the soil with plant-ready minerals, giving your plants a significant boost! Great for greenhouse and hydroponic systems and both indoor and outdoor applications.
Product Highlight Features:
- Once diluted, it can be watered-in or applied as a foliar spray.
- Promotes budding and blooming.
- Great for greenhouse and hydroponic systems and both indoor and outdoor applications.
- Promotes plant health & vigor.
- NPK (2-3-0).
- Made with 100% Natural Ingredients.
Available in quarts.
Buy Locally:
We believe in local retailers, to find the product you are looking for, visit our store locator
Buy online:
Bar Harbor Blend Organic Potting Soil
$9.99 – $20.99Bar Harbor Blend Organic & Natural Potting Soil
Our great all-purpose potting soil is made with sphagnum peat moss, compost, perlite, lobster and crab shell meal and kelp meal. It is designed for potting indoor and outdoor container plants. Water and fertilize less with this nutrient rich, compost based potting soil. OMRI Listed.
Product Highlight Features:
- For houseplants, flowers, vegetables, herbs, & all container gardens.
- Helps retain moisture & improve aeration.
- Water and fertilize less with this nutrient rich, compost based potting soil.
- Approved for organic growers.
Available in 8qt, 16qt, 1cf and 2cf bags.
Target pH 6.2
Buy Locally:
We believe in local retailers, to find the product you are looking for, visit our store locator
Buy Online:
Castine Blend Organic & Natural Raised Bed Mix
$12.99 – $19.99Castine Blend Organic & Natural Raised Bed Mix
An enriched blend of fully cured compost, sphagnum peat moss, dehydrated poultry manure, lobster and crab shell meal, greensand, biochar, worm castings and mycorrhizae. Great for growing vegetables, herbs, and flowers.
OMRI Listed.
Product Highlight Features:
- Helps retain moisture & improve aeration.
- Great for growing healthy vegetables, herbs and flowers.
- Natural slow-release nitrogen.
- Rich in organic material.
Available in 1cf and 2cf bags.
Target pH 6.5
Buy Locally:
We believe in local retailers, to find the product you are looking for, visit our store locator
Buy Online:
Quoddy Blend Lobster Compost
$7.99 – $12.99Quoddy Blend Lobster Compost
The original “seafood” compost. Made with lobster and crab shell meal blended with compost, sphagnum peat moss and aged bark. The result is a complex soil that drains well and is ideal for conditioning beds and borders. Excellent for high yield vegetable gardens. OMRI Listed.
Product Highlight Features:
- For Vegetables, Flowers & Lawns.
- Improves and Revitalizes Soil.
- Can be used to amend soil and you can also plant directly in Quoddy Blend.
- Adds calcium.
- Approved for organic growers.
Available in 8qt & 1cf bags.
Target pH 6.5
Buy Locally:
Buy Online:
Sprout Island Organic & Natural Seed Starter
$9.99 – $25.99Sprout Island Organic & Natural Seed Starter
A rich mixture of blended sphagnum peat moss, compost, aged bark, perlite, kelp meal, lobster and crab shell meal, worm castings and mycorrhizae. Designed specifically for germinating seeds and rooting cuttings. OMRI listed.
Product Highlight Features:
- For seed germination and rooting plant cuttings.
- Natural slow-release nitrogen.
- Encourages healthy, disease resistant plants.
- Approved for organic growers.
*We recommend cell packs sized 72 or larger.
Available in 8 Quart, 16 Quart and 2cf bags.
Target pH 6.2
Buy Locally:
We believe in local retailers, to find the product you are looking for, visit our store locator
Buy Online:
Stonington Blend Grower’s Mix
$34.99Stonington Blend Organic & Natural Grower’s Mix
Created specifically for growing Cannabis. Rich in nutrients and formulated with amendments designed to boost budding, blooming and root development. Designed for high performance growing in containers and large pots. This blend incorporates sphagnum peat moss, coir, perlite, compost, worm castings, fish bone meal, lobster and crab shell meal, kelp meal, alfalfa meal and mycorrhizae. For best results, grow in 15 gallon containers. OMRI listed.
Product Highlight Features:
- High performance potting mix for large container plants.
- Natural slow release nitrogen.
- Living soil perfect for all potted and container gardens.
- On its own, it is enough to feed a single cannabis plant through a full grow cycle* in a 15-gallon container.
- Approved for organic growers.
Available in 1.5cf bags – enough to fill a 15-gallon pot.
Target pH 6.3
Buy Locally:
Buy Online:
Stonington Blend Plant Food
$18.99Stonington BlendTM Organic Plant Food with Lobster, Kelp & Worm Castings (5-2-4)
Made with lobster and crab shell meal, fish meal, kelp meal, and worm castings. This exceptional fertilizer will super charge the soil, giving all your plants a significant boost. It is also high in calcium (4%) and a range of macro and micro-nutrients to help improve plant vigor! OMRI listed.
Product Highlight Features:
- Promotes leafy green growth, budding, flowering & fruiting.
- For containers, vegetable gardens, flower beds.
- Great for replenishing soil between grows in your raised bed!
- Approved for organic growers.
- NPK (5-2-4)
Available in 4lb bags.
Buy Online:
Fish Bone Meal
$17.99Fish Bone Meal Organic Plant Food for Buds & Blooms (5-13-0) with 18% Calcium
An exceptional organic fertilizer ideal for budding and blooming plants. Made from dehydrated fish bones, it is an excellent natural source of phosphorus, calcium, and nitrogen. OMRI Listed.
Product Highlight Features:
- Promotes budding, flowering & fruiting.
- Add to planting holes for flowering bulbs.
- Perfect for fertilizing bulbs, vegetable gardens, container gardens and trees & shrubs.
- NPK (5-13-0) with 18% Calcium.
- Approved by organic growers.
Available in 3lb bags.
Buy Online:
Learn more about Coast of Maine's soil amendments and mulch!
Coast of Maine's Organic & Natural Planting Soils! - Soils designed specifically for planting Tomatoes & Vegetables, Roses & Flowers, and Acid-Loving plants!
$10.99
Coast of Maine Organic Products was founded in 1996 with the simple idea that a healthy planet needs healthy soil to sustain life. From this idea, a love of gardening and a commitment to sustainable practices, Coast of Maine Organic Products has grown to offer what we believe are the most unique and effective organic gardening products available. Here's what our customers think of our products:
"I have a baby and a 2 1/2 year old. I grow what I can to feed the kids, and I use Coast of Maine every year...I try to grow everything organically. It is important for me because the kids are eating it, and it's nice to know where your food is coming from. "
Mom and Organic Gardener
Organic Gardener
"Coast of Maine is the one soil that I have to have every year...It's really the only organic garden soil that has good trusted ingredients that I can buy. You can't go wrong with it. It's great and people love it."
Melissa Higgins
Sprague's Garden Center Manager
"I have been blown away by the Fundy Blend! My garden has not had any weeds, and I haven't once needed to feed my plants because of all the nutrients and kelp in the Fundy Blend... It is amazing!"
Crystal Kovalik
Skillin's Greenhouse employee
"I need to sell quality... when my customers buy something from us, they know it will work. I can't take chances on average. That is why Coast of Maine is a staple here, because we think it is one of the best products out there."
Chris Kennedy
Kennedy's Country Gardens
"We absolutely love Penobscot Blend, because our customers have more success when they add it to what they are planting. Our landscape department finds that adding some into the hole with the trees they are planting helps the trees survival through the winter and cold."
Mary-Jo Bridge Palmer
Sam Bridge Nursery
"I use the Lobster Compost in my garden because it gives me the best tomatoes and greens. It lightens my soil and makes it much richer... I need as much help as I can get, and coast of Maine gives it to me!"
Kit Cornell
Wentworth's CustomerFrom Our Blogs - Gardening / House Plant
Native Seed Secrets
Tempted to go native in your garden? Seeds are a super way to start. Thanks to the new movement to nurture native plants in our gardens, seeds of all-time favorites like milkweeds and native lupines are readily available. Or, you could send for seeds through the mail. Whichever way you go, you’ll be getting the […]
Seeds Get You Started
Spring is so fickle. The temperatures go up, the temperatures drop down. It’s way too risky to start planting in the ground. But there is a totally satisfying alternative that will fulfill all your urges to play in the soil. Plus, it’s loads of fun. You need to plant seeds. Really, once you’ve given seed […]
Big into Begonias
Why are begonias big right now? Maybe because they have personality. Unlike all those placeholder foliage plants that sit in the corner looking pretty darn blah (yawn), begonias step out of the shadows and say something. Talk about diversity: Begonias boast leaf shapes beyond your craziest imagination. From angel wings to bat wings, from pond […]
Green Gifts with Love
Your partner really wants a houseplant this Valentine’s Day. Enough hints have been dropped to let you know that a flaming katie would be warmly welcomed onto the windowsill right now. A watering can has been staged strategically in front of every faucet in the house as a not-so-subtle reminder, and your partner always seems […]
Succulents Without Tears
They’re kinky, they’re seductive, and they look like something out of Sci-Fi. You’ve always wanted a succulent, right? Well, we’re going to help you make it happen. But first, let’s dispel a few myths because succulents aren’t as high maintenance as you might think. In fact, they are among the easiest houseplants to host—you just […]
A User’s Guide to Amazing Amaryllis
You want them. Of course, you want them. Who wouldn’t be starstruck by huge bodacious trumpet-shaped blossoms blaring with voluptuousness? We’re talking about totally nondescript plump bulbs that suddenly send out promising flower buds in a snap and then pop into performance like you wouldn’t believe. And all this is staged in the middle of […]
