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Glacial Rock Dust

Item #: RD

Our price: $19.95


Mined from deposits of glacial moraine, this rock dust contains a broad spectrum of trace minerals and micronutrients for plants and soil. Use as a soil amendment for your garden beds, lawns, compost and add to your organic fertilizer program to increase long term soil fertility. read more

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Our price: $19.95


Glacial rock dust contains a broad spectrum of trace minerals and micronutrients for plants and soil. Use as a soil amendment for your garden beds, containers and lawns. Add to your compost or organic fertilizer program to increase long-term soil vitality and produce healthier plants.

Features & Benefits:

  • Long-term soil amendment
  • Provides micronutrients for plants
  • Source of calcium, iron, magnesium, potassium and trace minerals
  • Increases phosphorous availability
  • Enhances root structure and improves soil fertility
  • Will not "burn" plants or seedlings

About Glacial Rock Dust

Glacial rock dust is a natural mineral product mined from deposits of glacial moraine. These deposits contain a variety of crushed rocks formed over thousands of years of glacial action. The resulting rock dust contains a broad range of trace minerals, which are essential micronutrients to the soil food web, but often depleted in soils.

Glacial rock dust helps restore these mineral imbalances, providing silicate minerals in an accessible form for soil microbes to create healthy soil. It can improve soil structure, moisture retention, nutrient availability, microbial action and also raise pH in acidic soils.

How to Use:

Use glacial rock dust for long-term soil building to improve the root systems of your trees, lawn, vegetable gardens, and flowerbeds.

Glacial rock dust should be applied during the spring once per year. It can also applied seasonally for intensive growing. You cannot over apply glacial rock dust because it will not burn plants. You can also add glacial rock dust to your organic fertilizers, including compost, to enhance the performance of other fertilization methods.


Garden beds: Apply up to 25 lb. per 100 square feet. Gently dig into the soil surface up to once per year or as desired.

Transplanting and pre-mixing soil for containers: For hanging baskets, potted plants and planter boxes, mix 8 tablespoons into 1 gallon of soil or growing medium prior to planting.

Top dressing for containers: For hanging baskets, potted plants and planter boxes, use 4 tablespoons per 1 gallon of soil or growing medium. Gently till the glacial rock dust into the surface of the soil. Apply up to once per month or as desired.

Composting: Mix liberally into compost pile or tumbler to increase microbial activity during processing. Add to finished compost to increase micronutrients.

100% Satisfaction Guarantee

We want you to be completely satisfied with every purchase you make. If you are in any way dissatisfied with a product you ordered, we'll exchange it, replace it or refund your money within 30 days of purchase. Simply email us the problem, and we'll take care of you. Certain products have extended warranties (up to 50 years!) that are listed on the particular product page. Please call us at 1-888-451-6752 if you need further clarification.

Additional Information

Weight 5 lb or 25 lb
Key Feature Mineral rock dust is a soil amendment and source of micronutrients for plants
Origin Made in the U.S.A.

Shipping Information

Shipping Details:
Insured against damage or loss while in transit
This Product Ships To:
US Lower 48
Ships Via:
Fedex or UPS

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  • No-hassle, 30 day returns
  • No sales tax
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  • In business since 2000
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  • Member of Better Business Bureau, Green America, and US EPA Watersense
  • Carbon-neutral, Family-owned business that promotes sustainability!

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