Horticultural Applications

Soil Amendment and Conditioner

PUMICE IS WIDELY USED to improve the growability of soils—combating compaction and runoff, improving friability and aeration, and holding moisture and nutrients in the root zone. The porous, foamy nature of pumice also makes for an ideal environment for beneficial microbes to thrive.

Why SoilRox?

SoilRox™ works within the soil on two levels. The first is as a structural conditioner, physically amending poor soils—like heavy clay—to be less dense by holding the soil particles apart, creating elemental tilth and friability. This improvement in the distribution of the micro and macro spaces in the soil enhances root zone breathability and drainage.

The second benefit comes from the foamy, sponge-like nature of the pumice stones themselves: the stones—including the tiny fines—are riven with nooks and crannies and pockets that hold moisture and nutrients in the root zone and available to the root systems over a longer period of time.

Though lightweight, SoilRox is somewhat heavier than expanded perlite and vermiculite, and so does not tend to work its way to the surface over time and float or blow away. The irregular, grippy edges of the pumice stone also work to bind it into the soil matrix.

Newly seeded lawn sprouting in clay-heavy soil amended with SoiRox™ Amender XF

SoiRox™ Amender XF

Cut-away showing the rootzone of new turf thriving in clay soil amended with SoiRox™ Amender XF

SoiRox™ Amender XF

Preparing a new lawn bed: native clay-heavy soil (right) amended with SoiRox™ Amender XF (center) and compost (left) prior to till-blending and seeding. The compost will break down and disappear; the pumice will remain, providing permanent structural improvement to the clay-heavy soil.

Micrograph

This micrograph of pumice fines shows the nooks and crannies that capture and hold moisture and nutrients for on-demand uptake by the root system. Also evident are the grippy edges that help hold pumice functionally in suspension throughout the soil matrix.

Soilrox
Hess Pumice

SOURCED FROM THE WORLD’S PUREST COMMERCIAL DEPOSIT OF WHITE PUMICE

SoilRox is Enduring

Organic composts are wonderful and a great addition to any soil improvement effort, but any structural improvements from the compost breaks down over time as the compost is consumed. Without a steady schedule of compost re-application and blending/tilling, the soil tightens and returns to its poor native state. SoilRox is inorganic and will not break down. It remains indefinitely in the soil, providing vital structural support. In applications that are not replanted on a annual basis—like a lawn or any other living ground cover—that’s an extremely valuable benefit.

SoilRox is easily blended with composts to provide the ideal long-term solution to fix-it and forget-it applications like lawns, parks, runoff control constructs, and reclamation projects. The compost provides the kick-start nutrient base to poor or damaged soils, with the pumice remains long after the compost is consumed to provide the elemental tilth that in necessary for the on-going vitality of the newly-established vegatative cover.

HORTICULTURAL PUMICE PURITY DISCLAIMER—Our horticultural mine grades are typically comprised of 98% pumice and 2% other igneous minerals, which are not removed through our mining processes.

Soil Amending Recipes

Determining soil type using the jar composition test (or similar), provides a reference point from which to correct the performance of a out-of-balance (non-loamy) soil type.

AMENDING CLAY SOIL: Spread 4 inches of SoilRox™ Amender XF and 2 to 3 inches of good compost. Blend into 6 to 8 inches deep into the clay soil.

AMENDING SILTY SOIL: Lay down 2 inches of SoilRox™ Amender XF and 2 to 3 inches of good compost. Blend into 6 to 8 inches deep in the silty soil.

AMENDING SANDY SOIL: Spread 1 inch of SoilRox™ Amender XF and 2 to 3 inches of good compost. Blend into 6 to 8 inches deep into the sandy soil.

NOTE: These recipes are, of necessity, generalized. More thorough soil-typing followed by examination and testing of the amended soil profile would be necessary to determine the quantity (and grade/type) of added SoilRox to attain ideal conditioning.

The Pumice Store

Contact the Pumice Store:

Fulfillment and Shipping:  fc@hesspumice.com

Wholesale Opportunities: 
salesteam@hesspumice.com

ADDITIONAL INFORMATION and SUPPORT DOCUMENTS:

Order SoilRox

PLEASE READ THE SHIPPING NOTES BELOW BEFORE PLACING AN ORDER.

SHIPPING NOTESInformation about turn-around times, auto-calculated shipping, obtaining shipping rates for large orders, more.

1 | For weight-quantities over 20 lbs, shipping cost savings are typically realized by ordering a full-sized production bag (boxed) instead of multiple 20 lb. boxes.

2 | For large orders (over 3 full-sized production bags), please contact us at fc@hesspumice.com for a freight rate.

3 | The shopping cart system occasionally glitches on an address and throws up an “order can’t be shipped to your address/location” (or similar) error message. Not true. We ship almost anywhere. Contact us at fc@hesspumice.com and we’ll take care of you.

4 | The shopping cart system is set up to auto-calculate domestic (U.S.) shipping—for those ordering from elsewhere, please email us at fc@hesspumice.com and we’ll see what we can do.

5 | Orders will take up to 3 business days to prepare and process before shipping.

ORDER NOTESUnderstand the significant per-shipped-pound savings of ordering bigger/heavier package weights.

PACKAGE WEIGHT % SAVINGS PER POUND (including shipping)*
4 or 5 LBS 0% (baseline)
20 LBS 63% (savings vs. 4 lb. package)
45 LBS 82% (savings vs. 4 lb. package)
52% (savings vs. 20 lb. package)
* Savings percentages are calculated with shipping included (all-in cost/shipped pounds). These calculated percentages are typical: shipping costs may vary from shipping costs used depending on carrier type, package size, transit distance, residential vs. commercial address, remoteness of address, and similar factors.