Use this bar to show information about your cookie policy.
Roll over image to zoom inClick on image to zoom
/
Description
Black Basalt Rock Dust was formed millions of years ago when hot lava came into contact with large bodies of water. The resulting product is mineral dense and perfect for amending potting soils, lawns, fairways & for fruiting/flowering plants.
Packed full of Silica, Calcium & Magnesium for powerful growth! It will help raise and sustain soil pH levels to unlock nutrients and allow for lusher, healthier plant growth!
Perfect for adding into Coco Coir for Calcium & Magnesium buffering! Even better on fruiting trees, lawns, and areas where high rainfall has occurred, resulting in acidic soils.
It will raise the pH of Peat Moss to an acceptable range for optimal growth.
Usage Guide
100g per m2 or incorporate at 5-10% with your existing fertilizer routine. Apply 50-80g per 30L of potting soil.
Apply at the start of each season for the best results.
Our Black Basalt rock dust is largely made up of the mineral olivine. It is a silicate mineral often found in basalt and peridotite, two volcanic rocks. Olivine is also found in meteorites. The most typical source of olivine rock dust is volcanic deposits. Huge scientific discoveries and leaps are currently being explored regarding this mineral rock dust and its unique ability to sequester carbon in much larger quantities than ever seen before!
Other benefits of using Black Basalt Rock Dust include
Improving soil fertility:Black Basalt Rock Dust is rich in essential plant nutrients, including magnesium, iron, and calcium, which can help to improve soil fertility and support healthy plant growth.
Balancing soil pH: Black Basalt Rock Dust can also help to balance soil pH levels, making it more suitable for a wider range of plants.
Improving soil structure: The fine powdery texture of black basalt rock dust can help to improve soil structure and increase the availability of water and air to plant roots, leading to healthier plant growth.
Providing trace minerals: Black basalt rock dust is also a source of trace minerals that are important for plant health and growth, including manganese, zinc, and copper.
Enhancing soil biota: The addition of black basalt rock dust to soil can also help to enhance the population of beneficial soil microorganisms, which play an important role in nutrient cycling and disease suppression.
Estimate shipping
Payment & Security
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
Payment & Security
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
I needed to find specific amendments to
Make my own healthy potting mix. I found Dr Greenthumbs online who had most of my requirements. Response time was excellent even for those living in Tasmania. And my order arrived promptly and in good condition.
I am now armed with everything I need to create a healthy soil. Highly recommend this company
T
Trent Harvey
Great service
I just love these products
A
Aldo
Thumbs up!
A while back I gave a review for some dry amendments and was saying that my organic gardening had grown to a new level. I could go further now to say, these dry additives have opened up a whole new world in my garden!
G
Glen Rae
Black Goodness
How’s the magic of this fine dust, a little goes a long way. Then in a short amount of time my plants gave a big thumbs up. Doesn’t take much money to see a big difference in outcome
G
Gilly
Black Gold
Using it to balance the PH in my raised garden beds, as they kept dropping below 6. I've been able to get the PH back up to 6.5 using the Black Basalt Rock Dust.. Great stuff :)
Here is our official guide to transplanting your favourite plants into MAB Grow™! We include how to care for them afterwards, and some pro tips for getting the most out of our media!
To purchase MAB Grow™ visit drgreenthumbs.com.au/collections/mab-grow
Dr Greenthumbs - No Till Garden Bed Reset - Pre green-manure planting preparation
In this video I share some tips using Root Roids & Ocean Grown during winter. Then I reset my 3x3 no till harden bed preparing for a green manure crop pre spring.
All products used available from drgreenthumbs.com.au
Leca is a popular hydroponic growing medium that has been gaining popularity among indoor gardeners. This versatile medium is made from expanded clay pellets and is known for its ability to improve plant growth and health. In this article, we will explore how Leca can help you grow bigger and healthier plants.
Absolutely love the product, i cannot live so my all green babies without it !
Love purchasing products from drgreenthumbs as he always gives me best advice for everything!
U dont have to believe me u can see the huge difference using ROOT ROIDS makes to ur plants. Scott is extremely helpful and painless to deal with, id recommend Dr Greenthumbs to my friends if I had any 🙃
I needed to find specific amendments to
Make my own healthy potting mix. I found Dr Greenthumbs online who had most of my requirements. Response time was excellent even for those living in Tasmania. And my order arrived promptly and in good condition.
I am now armed with everything I need to create a healthy soil. Highly recommend this company
