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Organic Soil Amendments For Sale

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Sup\'r Green (3-2-2)
Prices start at : 5.26 USD / 25.00 lbs

A local favorite! Ground and composted, Organic Chicken Manure Fertilizer provides a well balanced supply of nutrients to plants. Work in, then apply a generous layer as mulch. Excellent for mulching and moisture retention too! Will NOT burn and is compliant...
  • brand: Stutzman Farms
Montana
Bozeman
Bone Meal (2-14-0)
Prices start at : 45.15 USD / 55.0 lbs

Benefits: • An organic source of phosphorus and calcium • Promotes healthy root systems • Used heavily during fruiting and flowering • Granulated for easy application • Chock full of trace elements Available size: 50 lb Bag DIRECTIONS FOR USE:...
  • brand: Bridgewell Resources
Montana
Bozeman
Azomite (0-0-0.2)
Prices start at : 17.35 USD / 50.00 lbs

Add to compost or fertilizers and spread up to 500 lbs per acre and lightly disc or apply in row where planting. A natural source of minerals and trace elements! Micronized Azomite is used in gardens as a re-mineralizer for soils and an anti-caking agent...
  • brand: Azomite Mineral Products
Montana
Bozeman
Sphagnum Peat Moss
Prices start at : 11.45 USD / 50.0 lbs

Available size: 2.2 cu ft Bag DIRECTIONS FOR USE: Mix liberally with any soil to improve water retention, soil aeration and to stimulate root development. Trees & Shrubs: Dig hole 3X the root ball width and just as deep.
  • brand: Black Gold
Montana
Bozeman
Fish Bone Meal (4-20-0)
Prices start at : 40.2 USD / 55.0 lbs

For new plantings, prepare the transplant hole and mix 1-2 cups with the backfill soil. Mix thoroughly into the soil and water. A by-product of Pacific Northwest fisheries, Organic Fish Bone Meal is a great source of phosphorus and calcium (14%), plus...
  • brand: Pro-Pell-It!
Montana
Bozeman
Alfalfa Pellets
Prices start at : 16.25 USD / 55.0 lbs

Also contains trace minerals and triacontanol, a naturally occurring plant growth promoter, which has been shown to improve the growth and yield of many crops. Benefits: • Pelleted for easy application • An excellent source of nitrogen from a plant...
  • brand: Payback
Montana
Bozeman
Kelp Meal (1-0-2)
Prices start at : 78.35 USD / 55.0 lbs

Garden Beds: Broadcast 5-20 lbs per 1,000 square feet prior to planting and work into the soil. Made from dried and ground Ascophyllum nodosum seaweed, Organic Kelp Meal is an excellent source of micronutrients and beneficial plant growth promoters.
  • brand: Tidal Organics
Montana
Bozeman
Humic Acids (Granular)
Prices start at : 4.39 USD / 6.00 lbs

Containers: Add 1-2 tsp per gallon of soil and mix thoroughly or mix 1-2 lbs per cubic yard. Benefits: • Unaltered, oxidized lignite from natural sources • 50% humates from Leonardite • Particles crushed and graded to 1-3mm in size • Carefully...
  • brand: Down To Earth
Montana
Bozeman
Kelp Meal (1-0.5-2)
Prices start at : 5.15 USD / 3.00 lbs

• A potent all around ingredient that will benefit all plants Available size: 2 lb Bag DIRECTIONS FOR USE: New Plantings: Add 1/4 cup per 10 square feet during soil preparation, or 1/4 cup per 1/2 cubic foot (5 gallons) of mix that will be added to...
  • brand: Dr. Earth
Montana
Bozeman
Soybean Meal (7-1-2)
Prices start at : 8.12 USD / 6.00 lbs

DIRECTIONS FOR USE: Vegetable Gardens: Apply 2-1/2 to 5 lbs per 100 square feet and thoroughly mix into soil. Grower's Tip: Recommended application for transplants is 1-2 Tbsp per hole; application rate for lawns is 5-10 lbs.
  • brand: Down To Earth
Montana
Bozeman
Rock Phosphate
Prices start at : 23.5 USD / 55.0 lbs

Benefits: • A non-leachable source of phosphorus and calcium • Used by growers for over 50 years • Promotes strong roots and accelerates crop maturity • Earthworms and beneficial soil microbes love it! • Contains 3% available — and a minimum...
  • brand: Canton Mills
Montana
Bozeman
Neem Meal (6-1-2)
Prices start at : 8.01 USD / 6.00 lbs

To feed established plants, side dress 2-4 oz, depending on plant size. Mix into soil surface and water well. Box DIRECTIONS FOR USE: Vegetables/ Flowers: Apply 3-6 lbs per 100 square feet and thoroughly mix into soil.
  • brand: Down To Earth
Montana
Bozeman
Greensand (0-0-0.1)
Prices start at : 9.65 USD / 8.50 lbs

Mined from natural deposits of glauconite, it is composed primarily of iron-potassium silicate, which gives it a bluish-green color. Light: 5 to 10 lbs. For applications during the growing season use the light recommended rates below.
  • brand: Espoma
Montana
Bozeman
Vermiculite (8qt)
Prices start at : 2.46 USD / 3.00 lbs

Soilless gardening mixes get a lift from this all-natural mineral that boosts water retention without changing the pH. Features: • Immediately improves soil structure • Promotes fast, complex root structure • Won't break down over time • Excellent...
  • brand: Black Gold
Montana
Bozeman
Karanja Cake (55lb)
Prices start at : 65.3 USD / 65 lbs

Soil Drench/ Foliar Spray: Place 1 cup in a mesh bag and brew with 5 gallons of water for 1-2 days. Water thoroughly after application. Grower's Tip: As a preventative measure, use during the whole lifecycle of your plants.
  • brand: Concentrates
Montana
Bozeman
Basalt Powder
Prices start at : 21.7 USD / 55.0 lbs

For containers, use 1 cup per cubic foot of potting soil. Restore soil fertility and increase yields with 100% Volcanic Basalt Rock Dust. During the growing season, side-dress crop rows or around the drip line of trees and shrubs.
  • brand: Gaia Green
Montana
Bozeman
Greensand (0-0-0.2)
Prices start at : 32.8 USD / 50.0 lbs

Used as a soil amendment and fertilizer, Micronized Super Greensand contains about 10% total potash (0.2% soluble), along with iron, magnesium, silica and as many as 60 other slow-release trace minerals.
Montana
Bozeman
Dried Blood (13-0-0)
Prices start at : 56.15 USD / 45.0 lbs

A powerful, natural source of nitrogen! Blood Meal (13-0-0) has been used for years by organic gardeners as a slow release source of nitrogen, plus trace minerals. Features: • A powerful source of organic nitrogen (13%) • Slow release — feeds plants...
  • brand: Pro-Pell-It!
Montana
Bozeman
Neem Cake
Prices start at : 36.95 USD / 50.0 lbs

Ideal for potting mixes and garden soils! Organic neem cake ( Azadirachta indica ) is what remains after the seeds have been processed for oil. Containers: Add 1-2 Tbsp per gallon of soil and mix thoroughly or use 1/2 to 1 lb per cubic yard.
  • brand: Concentrates
Montana
Bozeman
Gypsum
Prices start at : 14.2 USD / 55.0 lbs

Moisture is essential to achieve the desired soil-conditioning effect. 64% Calcium (Ca) ….. Apply in spring and fall to take advantage of seasonal moisture. Will also improve the structure of alkaline soils by removing excess sodium.
  • brand: Columbia River Carbonates
Montana
Bozeman
Fossil Shell Flour
Prices start at : 25.9 USD / 57.0 lbs

Diatomaceous earth is a gardener's best friend. With Perma Guard Fossil Shell Flour, you can add this natural element from one of only four food grade deposits in the USA. Safe and effective — contains less than one half of 1% crystalline silica and...
  • brand: Perma-Guard
Montana
Bozeman
Cottonseed Meal
Prices start at : 30.9 USD / 55.0 lbs

Lightly work into the soil and water. A by-product of the cotton industry, Cottonseed Meal (5-2-1) is an excellent source of slow-release nitrogen, phosphorus, potash and numerous trace elements.
  • brand: Pro-Pell-It!
Montana
Bozeman
Garden Manure (4-2-2)
Prices start at : 3.44 USD / 5.00 lbs

Available size: 4 lb Bag DIRECTIONS FOR USE: Flowers and Vegetables: Apply at the rate of 5 lbs. An additional feeding should be made after plants are well established. Approved for organic gardening.
  • brand: Espoma
Montana
Bozeman
Greensand
Prices start at : 6.14 USD / 8.00 lbs

Containers: Add 1-2 Tbsp per gallon of soil and mix thoroughly or add 2-1/2 to 5 lbs per cubic yard. A popular soil amendment and natural source of potash! Down To Earth Greensand is composed primarily of glauconite, a blue-green siliceous mineral that...
  • brand: Down To Earth
Montana
Bozeman
Silica (Si)
Prices start at : 8.5 USD / 2.00 lbs

Montana Grow Si is an organic silica plant amendment. Features: • Builds strong roots, stems and foliage • A naturally produced and unaltered plant amendment • Improves soil structure, yield and quality of many plant species • Increases the number...
  • brand: MontanaGrow
Montana
Bozeman
Glacial Rock Dust
Prices start at : 21.5 USD / 55.0 lbs

Remineralize the soil! Gaia Green Glacial Rock Dust contains a broad range of trace minerals… minerals which have been slowly lost through the ages by erosion, leaching and farming.
  • brand: Gaia Green
Montana
Bozeman
Fish Meal (9-4.5-0)
Prices start at : 68.55 USD / 55.0 lbs

Registered for use in organic agriculture (Washington State Dept. Stimulates vigorous growth and deep green color! A strong source of organic nitrogen, Fish Meal fertilizer is uniquely processed to retain maximum nutritional value without using high temperatures...
  • brand: Pro-Pell-It!
Montana
Bozeman