Soil Supplies

This is Coast of Maine’s full collection of soil supplies, including compost, amendments, fertilizer, mulch, and soil. Our time-tested, approved products are made with our customers and our planet in mind, and many of the ingredients we use are locally sourced. Whether you’ve already earned your green thumb or you’re just beginning your gardening career, our supplies can help make your life a little greener.

Buy local by finding a soil supply dealer near you with our online locator tool and don’t hesitate to contact Coast of Maine with any questions about our soil supplies! Additionally, you can visit our FAQ page, where we offer answers to commonly asked questions.

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Aeration Formula

$26.99

Aeration Formula

 

A blend of 70% Coir and 30% Perlite has been an industry staple for hydroponic growers for years.

Coast of Maine has developed our own unique blend by adding lobster meal and crab shell meal and kelp meal to this popular growing media. Base mix to help you create your own custom soil.

Product Highlight Features:

  • Peat Free.
  • 70% Coconut coir/30% perlite.
  • Enriched with lobster meal & kelp meal.
  • Increased aeration and drainage.
  • Plant directly in this blend.
  • For indoor and outdoor containers.

Available in 1.5cf bags.

 

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Aged Cedar Mulch

$9.99

Aged Cedar Mulch

 

A finely textured, rich, dark chocolate brown mulch with all the natural benefits of cedar. Denser than other mulches, it helps retain soil moisture and suppress weed growth. Use to mulch around trees and shrubs.

 

Product Highlight Features:

  • Medium-textured and dark brown color.
  • Helps prevent weeds and erosion, holds moisture.
  • Prevents mower and trimmer damage.

 

Available in 2 cubic foot bags.

 

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Bar Harbor Blend Organic Potting Soil

$10.99$20.99

Bar 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

 

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Cape Neddick Blend Organic & Natural Indoor Houseplant Mix

$7.99$13.99

Cape Neddick Blend Organic & Natural Indoor Houseplant Mix is specially formulated for indoor houseplants and flowers using coarse coconut coir, perlite, sphagnum peat moss, and aged bark to optimize drainage and aeration for robust root development. Whether you are growing peace lilies, spider plants, philodendrons, monsteras, or other popular or exotic houseplants, this unique compost-free blend provides the optimum structure and benefits for nurturing strong, beautiful indoor plants and flowers.

 

Product Highlight Features:

  • Nurturing an environment to support robust roots.
  • Maximizes air space in soil while retaining moisture.
  • Compost free.

 

Available in 8qt & 16qt bags

 

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Castine Blend Organic & Natural Raised Bed Mix

$14.99$22.99

Castine 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

 

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Cobscook Blend In-Ground Garden Soil

$12.99$19.99

Cobscook Blend Organic & Natural In-Ground Garden Soil

 

Cobscook Blend™ Organic & Natural In-Ground Garden Soil is the ideal soil amendment for all your beds and gardens. It is carefully formulated to provide balance between structure, water retention, drainage and aeration for growing vegetables, annual and perennial flowers in the ground. It provides the rich and diverse soil your plants need. OMRI Listed.

 

Product Highlight Features:

  • For vegetable gardens and & flower beds planted in the ground.
  • Enriched with compost.
  • Premium soil builder.
  • Made with premium ingredients.
  • OMRI Listed.

 

Available in 1 & 2cf bags.

 

Target pH 6.0

 

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Dark Bark Mulch

$10.99

Dark Bark Mulch

 

A naturally rich, dark chocolate brown mulch made from pine and spruce bark. It is finer in texture and has a dense consistency. It helps retain soil moisture and suppress weed growth. As there are no dyes in this mulch, it may fade over time, depending on moisture and sunlight. Use to mulch around trees, shrubs, and perennials.

 

Product Highlight Features:

  • For mulching beds & shrubs
  • Made with naturally composted aged dark bark
  • Helps prevent weeds & retain moisture
  • Designed specifically for mulching perennials and annual beds and around roses, shrubs and trees.
  • Made with 100% Natural Ingredients.

 

Available in 2 cubic foot bags.

 

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Dark Harbor Blend Enriching Mulch

$9.99$15.99

Dark Harbor Blend Enriching Mulch

 

Dark Harbor Blend Enriching Mulch is an exceptionally rich, naturally dark, fine textured blend of composted bark. It helps retain moisture and insulate the surface soil against temperature variations that can harm roots. Because it is composted, it will not rob the soil of nitrogen and can be dug into the beds in the fall to improve the organic content of the soil.

 

Product Highlight Features:

  • For mulching beds & shrubs.
  • Made with naturally composted aged dark bark.
  • Helps prevent weeds & retain moisture.
  • Designed specifically for mulching perennials and annual beds and around roses, shrubs and trees.
  • Made with premium ingredients.

 

Available in 1 & 2 cubic foot bags

 

Target pH 6.3

 

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Fish Bone Meal

$18.99

Fish 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.

 

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Fundy Blend Organic Enriching Mulch & Seaweed

$10.49$16.99

Fundy Blend Organic Enriching Mulch & Seaweed

 

Fundy Blend Enriching Mulch & Seaweed is an exceptionally rich, naturally dark, fine textured blend of composted bark and seaweed.  It helps retain moisture and insulate the surface soil against temperature variations that can harm roots. Because it is composted, it will not rob the soil of nitrogen and can be dug into the beds in the fall to improve the organic content of the soil.

Product Highlight Features:

  • For mulching beds & shrubs.
  • Made with aged dark bark & seaweed to retain moisture.
  • Provides minerals & nutrients.
  • Mulch & compost – two products in one bag!
  • Approved for organic growers.

 

Available in 1 and 2 cf bags.

 

Target pH 6.3

 

 

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Hemlock Mulch

$9.99

Hemlock Mulch

 

A fine textured, double-ground, dark auburn color, fresh bark mulch made from Eastern Hemlock. Our blend contains a mix of fresh mulch combined with partially composted bark. It helps to retain soil moisture and suppress weed growth. Use to mulch around pathways and play area surfaces.

 

Product Highlight Features:

  • Premium medium textured bark mulch.
  • For mulching around shrubs, trees & beds.
  • Insulates, retains moisture & suppresses weeds.
  • Dark auburn color.
  • Approved for organic growers.

 

Available in 2 cubic foot bags.

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Kelp Meal

$18.99

Kelp Meal All Purpose Organic Plant Food (1–0–1) with 1% Calcium

 

100% dehydrated Norwegian Kelp (common seaweed) improves crop yields. Use around trees and shrubs, on lawns and in garden beds, or to top-dress containers.

 

Product Highlight Features:

  • Promotes budding, flowering & fruiting.
  • Add to planting holes for flowering bulbs.
  • Perfect for fertilizing bulbs, vegetable gardens, container gardens and trees and shrubs.
  • NPK (1-0-1) with 1% Calcium.
  • For use by organic growers.

 

This product complies with the USDA National Organic Program (NOP) rules.

 

Available in 4lb bags.

 

 

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Liquid Squid Fertilizer for Indoor Plants

$20.99

Liquid 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.

 

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Lobster Meal

$18.99

Lobster Meal Organic Plant food for Greening & Leafing ( 6-2-0) with 8% Calcium

 

Made entirely of lobster and crab shell meal. This is the ideal organic fertilizer for outdoor containers, vegetable, herb and flower gardens. Natural nitrogen and calcium help promote strong stem growth, green foliage, and vigorous roots.
OMRI Listed. 

 

Product Highlight Features:

  • Promotes leafy green growth in annuals, perennials and vegetables.
  • For outdoor containers, vegetable, herb and flower gardens.
  • NPK (6-2-0) with 8% Calcium.
  • For use by organic growers.

 

Available in 4lb bags.

 

 

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Monhegan Blend Organic & Natural Black Earth Lawn Soil

$11.99

Monhegan Blend Organic & Natural Black Earth Lawn Soil 

 

An exceptional organic compost-based lawn soil, designed for top-dressing and repairing lawns, as well as general purpose use around the garden. Made with a blend of compost, sphagnum peat moss, and aged bark. It will retain moisture in order to facilitate grass seed germination. OMRI Listed.

 

Product Highlight Features:

  • The best organic option for improving lawns.
  • For topdressing and seeding projects.
  • Helps dry or well-drained soil retain moisture.
  • Fine textured and easy to spread.

Available in 1cf bags.

 

Target pH 6.5

 

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Mount Desert Island Blend Organic Cactus & Succulent Mix

$11.99

Mount Desert Island Blend Organic Cactus & Succulent Mix

 

Designed for cactus, succulents, tropical palms, and citrus plants. This formula is made from: sphagnum peat moss, compost, sand, aged bark, biochar, fish bone meal, and kelp meal. It is ready-to-use and offers both excellent drainage and sufficient water retention. It is the perfect blend to promote root and plant growth.

 

Product Highlight Features:

  • Also for tropical palms & citrus.
  • Promotes flowering & root growth.
  • Helps retain moisture & improve aeration.

 

Available in 8qt bags.

 

Target pH 7.0

 

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Natural Cedar Mulch

$8.99

Natural Cedar Mulch

 

A great all-purpose fresh mulch. It is double ground from cedar to a fine, fluffy texture with an amazing cedar aroma. Because cedar is rot-resistant, this mulch will be slow to break down and last longer than others. It is light in color and
can be used to help lighten dark areas of your landscape. It helps to retain soil moisture and suppress weed growth. Use to mulch around trees, shrubs, and play area surfaces.

 

Product Highlight Features:

  • Medium textured light golden brown color cedar mulch.
  • Ideal for mulching around trees, shrubs and flower beds and in play areas and walkways
  • Helps to suppress weeds.
  • Helps to insulate your soil by retaining moisture during the heat of summer.
  • Made with premium ingredients.

 

Available in 2 cubic foot bags.

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Penobscot Blend Organic & Natural Planting Mix

$13.99

Penobscot Blend Organic & Natural Planting Mix

 

We believe Penobscot Blend™ Organic & Natural Planting Mix is the ideal soil amendment for planting perennials, roses, shrubs and trees. It provides the rich and diverse soil your plants need. Formulated from compost, sphagnum peat moss, aged bark, oyster shell and mycorrhizae. OMRI Listed.

 

Product Highlight Features:

  • All-in-one planting mix for perennials, shrubs and trees.
  • Ideal for quick, healthy root growth.
  • Shell fragments aerate soil.
  • Made with premium ingredients.

 

Available in 1cf. bags.

 

Target pH 6.5

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Pine and Spruce Mulch

$9.99

Pine and Spruce Mulch

 

A fresh bark mulch made from pine, spruce and fir harvested in Maine’s northern woods. It is rich brown in color. It helps to retain soil moisture and suppress weed growth. Use to mulch around pathways and play area surfaces.

 

Product Highlight Features:

  • Rich Brown color mulch.
  • Ideal for mulching around pathways and in play surface areas.
  • Helps to suppress weeds.
  • Helps to retain moisture.
  • Made with premium ingredients.

 

Available in 2 cubic foot bags.

 

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Planting Soil for Acid-Loving Plants

$12.99

Organic & Natural Planting Soil for ACID-LOVING PLANTS

 

The ideal planting mix to improve and revitalize the soil in and around plants that thrive in lower pH soils like: rhododendrons, azaleas, hollies, blueberries, strawberries, ferns, fuchsias, camellias, dogwoods, and conifers. Made with premium ingredients, it contains sphagnum peat moss, compost, and aged bark.

Product Highlight Features:​

  • Low pH formulation for acid-loving plants​.
  • Great for evergreens, hydrangeas & more! ​
  • Enriched with premium quality compost​.
  • Improves poor soils​.
  • Ideal for planting in containers.

 

Available in 20qt bags.

 

Target pH 5.0

 

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Planting Soil for Roses and Flowers

$12.99

Organic & Natural Planting Soil for ROSES & FLOWERS

 

The ideal planting mix to improve and revitalize the soil in and around all of your rose varieties, flowering annuals, and perennials. Perfect for supporting plentiful blooms and foliage. Made with premium ingredients, it contains compost, sphagnum peat moss and aged bark.

 

Product Highlight Features:

  • Supports blooms and healthy foliage.
  • Revitalizes and improves soil.
  • Light weight, organic soil mix that’s perfect for roses, flowers, & perennials.
  • Ideal for planting in containers.

 

Available in 20qt bags.

 

Target pH 6.2

 

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Planting Soil for Tomatoes & Vegetables

$12.99

Organic & Natural Planting Soil for TOMATOES & VEGETABLES

The optimal soil conditioner to revitalize the soil in and around your vegetable garden beds. It is naturally lightweight and contains just the right mixture to grow plentiful tomatoes and vegetables. Made with premium ingredients, compost, sphagnum peat moss, and aged bark.

 

Product Highlight Features:

  • A great soil conditioner that builds the soil naturally and improves poor soils.
  • Organic soil mix that’s perfect for healthy and flavorful tomatoes & vegetables.
  • Light weight, organic soil mix that’s perfect for your tomatoes & vegetables.
  • Ideal for planting in containers.

 

Available in 20qt bags.

 

Target pH 6.8

 

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Quoddy Blend Lobster Compost

$13.99

Quoddy 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 1cf bags.

 

Target pH 6.5

 

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Schoodic Blend Organic & Natural Composted Manure Blend

$11.99

Schoodic Blend Organic & Natural Composted Manure Blend

 

For those who prefer traditional manure composts. This is an all-purpose soil conditioner designed for gardens, beds and borders. Made with a blend of composted cow manure, sphagnum peat moss, and aged bark. OMRI listed.

 

Product Highlight Features:

  • For conditioning beds, gardens & lawns.
  • A great soil conditioner.
  • Helps retain moisture & improve aeration.
  • Natural slow release nitrogen.
  • Approved for Organic Growers.

 

Available in 1 cubic foot bags.

 

Target pH 6.5

 

 

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Sprout Island Organic & Natural Seed Starter

$10.99$26.99

Sprout 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

 

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Stonington Blend Plant Food

$19.99

Stonington 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.

 

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Topsoil

$5.99

Topsoil

 

Coast of Maine Topsoil is an economically priced blend of garden loam, compost, and sphagnum peat moss. Use for creating a base layer in raised beds, patching and filling holes in lawns.

 

Available in 20qt bags.

 

 

 

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Wiscasset Blend Earthworm Castings

$18.99$35.99

Wiscasset Blend Earthworm Castings

 

A rich blend of digested organic matter left behind by earthworms. Odorless and finely textured castings enrich soil with active biology and plant ready nutrients. Improves water retention. Use to brew compost tea. OMRI Listed.

 

Product Highlight Features:

  • Used to Brew Compost tea.
  • Premium Soil Builder.
  • For top dressing outdoor containers, windows boxes, hanging baskets, flower & veggie gardens.
  • Made with 100% Natural Ingredients.

 

Available in 8 quart and 20quart bags.

 

Target pH 6.8

 

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Stonington Blend Grower’s Mix

$36.99

Stonington 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.

 

Feeding Schedule

 

Available in 1.5cf bags

 

Target pH 6.3

 

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