Basalt Rock Dust

Rock dust is an organic fertiliser consisting of crushed basalt, a volcanic rock, which contains 72 minerals and trace elements.

Rock dust is added to soil to improve fertility and has been tested since 1993 at the Sustainable Ecological Earth Regeneration Centre (SEER Centre) in Straloch, near Pitlochry, in Perth and Kinross, Scotland.

SEER’s research claims that the benefits of adding Rock dust to soil include increased moisture-holding properties in the soil, improved cation exchange capacity and better soil structure and drainage.

Rock dust also provides calcium, iron, magnesium, phosphorus and potassium, plus over 70 minerals, trace elements and micronutrients. By replacing these leached minerals it is claimed that soil health is increased and that this produces healthier plants.

Rock dust is just what you think, rock, ground into a fine powder (technically, smaller than #200 mesh). When added to the soil it causes regeneration, so the soil regains its optimal healthy state.

Gardeners have described it as “magical,” but the logic behind this ancient fertilizer is quite simple.

Rock dust mimics the slow process of the Earth’s own ecosystem to replenish soils and restore the biosphere.

During various Ice Ages over the past two million years, slow-moving, two-kilometre-thick glaciers pulverized, ground up and transported rocks over great distances.

These ground rocks, or rock dust, re-mineralize the earth and act as a host to micro-organisms that enrich our soil.


A little goes a long way, so use Turbo-Grow sparingly and remember that twice
as much isn’t necessarily twice as good. At the same time note that it will never
burn your plants, nor leach out the soil, even at overdose levels.

It is unlike regular water soluble fertilisers, so conventional thinking doesn’t
apply, as we’re focusing on feeding the soil, and not the plants directly. The
longer it is in the soil, the more the fungi & micro-organisms will have chance
to assimilate it and make it biologically available.

One always has to add ample amounts of organic matter (compost) to the soil
as it is imperative to build both the soils mineral & organic base. Along with soil
biological life these form the basis of the ANIMAL – MINERAL – VEGETABLE triad
that builds fertile soil, Nature’s Way.

For badly weathered soils with low microbial life, significant results were
obtained by using Turbo-Grow along with EM (Effective Micro-organisms, a
mixed culture of beneficial micro-organisms that is applied as an inoculant to
dramatically increase the microbial diversity of soil.) Applying EM speeds up soil
processes tremendously, with the minerals and trace elements being assimilated
& made biologically available in the fastest time possible. Contact us for more
details & pricing on microbial inoculants & chelators.

The following are rough guidelines only, as soils vary tremendously & thus individual
requirements will differ. It enhances & completes your current fertilising regime,
rather than replacing it outright. Twice yearly applications, along with ample
compost will suffice for most.

Seedlings 1 Teaspoon per seedling
Pot plants 1 Tablespoon per 5liter capacity
Trees 500g to 1kg per tree
Shrubs & roses 1 to 2 Cups per plant
Flower & veg beds 500g to 1kg per square meter
Compost 10kg per cubic meter of raw material
Agriculture 500kg per hectare
Planting mixes 2% of total volume of mix


Herewith composition breakdown of the major elements as tested by the
Council for Geoscience. This was an X-ray fluorescence spectrometry test
indicating the major elements as the oxides they occur naturally in the rock as.


SiO2 48.58
TiO2 0.91
Al2O3 16.32
Fe2O3 9.30
MnO 0.18
MgO 6.36
CaO 12.11
Na2O 2.32
K2O 0.58
P2O5 0.15
Cr2O3 0.02


As – Arsenic IMS12Q – 2ppm 5.1ppm
B – Boron CP40D – 50ppm <50ppm
Bi – Bismuth ICP40D – 20ppm <20ppm
Ca – Calcium ICP40D – 10ppm 54000ppm / 5.4%
Cr – Chromium ICP40D – 10ppm 160ppm
Cu – Copper ICP40D – 10ppm 65ppm
Li – Lithium ICP40D – 10ppm <10ppm
Mn – Manganese ICP40D – 10ppm 1000ppm
P – Phosphorus ICP40D – 53ppm 700ppm
Pb – Lead ICP40D – 30ppm <30ppm
Sr – Strontium ICP40D – 5ppm 240ppm
V – Vanadium ICP40D – 10ppm 170ppm
Zn – Zinc ICP40D – 10ppm 68ppm
Zr – Zirconium ICP40D – 10ppm 110ppm
Al – Aluminum ICP91B – 0.02% 7.98%
Ba – Barium ICP91B – 0.02% 0.03%
Fe – Iron ICP91B – 0.02% 6.45%
K – Potassium ICP91B – 0.02% 0.63%
Mg – Magnesium ICP91B – 0.02% 3.20%
Si – Silicon ICP91B – 0.1% 24.6%
Ti – Titanium ICP91B – 0.02% 0.50%
Th – Thorium IMS40B – 0.5ppm 3.8ppm
Tl – Thallium IMS40B – 0.2ppm <0.2ppm
W – Tungsten IMS40B – 0.5ppm 1.6ppm
U – Uranium IMS40B – 0.2ppm 1.0ppm
Au – Gold FAI313 – 0.02ppm <0.02ppm
Pt – Platinum FAI313 – 0.02ppm <0.02ppm
Pd – Palladium FAI313 – 0.02ppm 0.03ppm
Ir – Iridium FAI363 – 0.13ppm <0.13ppm
Rh – Rhodium FAI363 – 0.02ppm <0.02ppm
Ru – Ruthenium FAI363 – 0.02ppm <0.02ppm
C – Carbon CSALA01 – 0.01% 0.25%
S – Sulphur CSALA06 – 0.01% 0.11%
Be – Berillium IMS40B – 0.5ppm 0.95ppm
Sc – Scandium IMS40B – 0.5ppm 16ppm
Co – Cobalt IMS40B – 0.5ppm 41ppm
Ni – Nickel IMS40B – 5ppm 89ppm
Ga – Gallium IMS40B – 2ppm 24ppm
Ge – Germanium IMS40B – 0.5ppm 0.57ppm
Rb – Rubedium IMS40B – 1ppm 19ppm
Y – Yttrium IMS40B – 0.2ppm 26ppm
Nb – Niobium IMS40B – 0.5ppm 12ppm
Mo – Molybdenum IMS40B – 0.5ppm 1.9ppm
Ag – Silver IMS40B – 2ppm <2ppm
Cd – Cadmium IMS40B – 0.5ppm <0.5ppm
In – Indium IMS40B – 0.1ppm <0.1ppm
Sn –Tin IMS40B – 0.5ppm 1.6ppm
Cs – Cesium IMS40B – 0.2ppm 1.1ppm
Hf – Hafnium IMS40B – 0.1ppm 2.7ppm
Ta – Tantalum IMS40B – 0.1ppm <1ppm
Se – Selenium IMS12Q – 5ppm <5ppm
Te – Tellurium IMS12Q – 2ppm <2ppm
Sb – Antimony IMS12Q – 1ppm <1ppm
Hg – Mercury IMS12Q – 3ppm <3ppm
La – Lanthanum IMS90A – 10ppm 25ppm
Ce – Cerium IMS90A – 1ppm 39ppm
Pr – Praseodymium IMS90A – 0.1ppm 4.5ppm
Nd – Neodymium IMS90A – 0.2ppm 18ppm
Sm – Samarium IMS90A – 0.1ppm 4.0ppm
Eu – Europium IMS90A – 0.1ppm 1.2ppm
Tb – Terbium IMS90A – 0.1ppm 0.83ppm
Dy – Dysprosium IMS90A – 0.1ppm 4.6ppm
Ho – Holmium IMS90A – 0.1ppm 1.0ppm
Er – Erbium IMS90A – 0.1ppm 2.6ppm
Tm – Thulium IMS90A – 0.1ppm 0.29ppm
Yb – Ytterbium IMS90A – 0.2ppm 2.2ppm
Lu – Lutetium IMS90A – 0.1ppm <0.1

Si – Silicon ICP84B – 0.3mg/l 460mg/l

Showing all 3 results