Glacial rock dust and basalt rock dust are broad spectrum organic mineral fertilizers that everyone can use without a soil test.
Glacial rock dust vs basalt.
Rock dust local is the first company in north america specializing in the local sourcing and delivery of the best broad elemental spectrum tectonic rock dusts for remineralization enhanced weathering and the best in biochar formulations nationally.
But not all rock dust are equal or optimal for any grow condition.
Let s take a look at their differences and find which will work best for your garden.
Basalt is a ground form of volcanic rock.
Azomite glacial rock dust basalt gypsum and sea 90.
So azomite glacial rock dust and basalt and we choose basalt.
We have been using a fertilizer that contains glacial rock dust at our organic perennial nursery and botanical gardens for many years.
This is made from sediment created by glacial expansion and contraction.
It has less silica than azomite and diatomaceous earth for sure.
The major types of rock dust or remineralization products marketed to growers today are.
The difference between volcanic and glacial or other rock dust is the mineral content mainly silica.
Basalt rock dust contains a more limited variety of minerals than the others.
Is glacial rock dust better than single geologic sources like basalt.
I ll get into that now.
Many people consider this the best rock dust for vegetable gardens.
We think it s the best.
Granite is my go to dust since we live 15 miles from a quarry.
We are very pleased to have found what we believe to be the best basalt volcanic rock dust in the uk.
It may not contain as many trace elements as basalt or azomite.
In the last century our actions have caused a depletion of soil minerals to the point where many of our soils are severely deficient in minerals.
Over 30 years ago o ne of the founding fathers of remineralization john hamaker promoted the use of glacial and alluvial rock dusts for remineralization.
This is said to have more pollutants than volcanic rock dust such as basalt but a lot of people seem to like it.
Igneous rocks like basalt and granite have the highest mineral content with basalt providing a greater balance of nutrients for optimal plant health and vitality.
Some sources say basalt rock dust is the optimal kind of rockdust and i ve never heard anyone deny that directly.
Local sourcing and nation wide delivery of the highest value rock dust products.
Silica is essential for optimal plant health and vigour but is lacking from commercial soil mixes.
