Diatomite Rock
(25 Lb Bag)

Increase the Water Holding Capacity of Your Soil

Brand: Down to Earth    Item Number: F032


In Stock! Ships from Northern CA.


In Stock! Ships from Northern CA.

Buy Big, Save Big! As low as $23.19 each!
  • Buy 10 for $26.09 each
  • Buy 50 for $23.19 each


Diatomite Rock is a naturally mined mineral composed entirely of the skeletal remains of trillions of microscopic, unicellular plankton called diatoms. The porous aggregate particles wet rapidly and will absorb greater than 100% of their own weight in water, which they freely release to the surrounding soil and plant roots.

With an ideal pore size of 0.1 to 1.0 microns, Diatomite Rock acts as a water and nutrient reservoir for plant roots enabling them to withstand common environmental stresses, such as drought and temperature extremes, more easily. Indefinitely stable and non-compactable, Diatomite Rock permanently improves the structure, drainage and oxygen exchange of heavy soils and horticultural growing media.

  • Derived from 100% diatomite
  • Mix 10% by volume or about 1.5 lbs per gallon of soil
  • For garden soils, apply 5 lbs per 10 sq ft.


  • Improves Water Holding Capacity


Fertilizer Type Powdered/Granulated Organic Status Accepted for Use in Organic Gardening*
Animal-Based No
Fertilizer Type Powdered/Granulated
Organic Status Accepted for Use in Organic Gardening*
Animal-Based No

(*) The manufacturer states that this product meets the standards of the National Organic Program (NOP). Always check with your Organic Certifier before using this product in any Organic Agriculture.

Useful Information


Product Label

What You May Need

Shipping Information

Up to 2 may be combined in a single package, but cannot be combined with other items.

Shipping Weight: 28.00 lbs. Dimensions: 27"L x 16"W x 7"H


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