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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.
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 :)
Scott provides fantastic knowledge and service with a passion for horticulture Wide range of high-quality products for all levels of gardeners Effective products for plant growth, flavor, and pest control
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AI-Generated Summary
Based on 94 reviews
Lexie R
a week ago
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Fantastic knowledge & service by Scott. Love the passion he has for horticulture & this business. 🌵🌱☘️
I purchased the Aroid plant mix, bloody brilliant!!! Definitely recommend.
Lexie R
a week ago
Harry's Complete Gardens
a month ago
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i recommend Dr green thumbs to all my costumers. From beginnings to expert gardeners, he has everything you need in one shop. i personally love dry amendments and root roids. My flowers never flower so much, my veggies are so much more flavorful and all my plants have vigorous growth rate which ive never seen before . My bio diversity increase at rapid rate and within my garden so resilient, it now takes control all unwanted pest.. Im very excited to empty my ute and trailer make the few hour south drive down Wollongong to visit the store and fill up ingredients for horticultural company to delivery my customers best products for their gardens. Scott also top bloke who also looks after his customers.
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Harry's Complete Gardens
a month ago
Harrison Payne
a month ago
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i recommend Dr green thumbs to all my costumers. From beginnings to expert gardeners, he has everything you need in one shop. i personally love dry amendments and root roids. My flowers never flower so much, my veggies are so much more flavorful and all my plants have vigorous growth rate which ive never seen before . My bio diversity increase at rapid rate and within my garden so resilient, it now takes control all unwanted pest.. Im very excited to empty my ute and trailer make the few hour south drive down Wollongong to visit the store and fill up ingredients for horticultural company to delivery my customers best products for their gardens. Scott also top bloke who also looks after his customers.
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Harrison Payne
a month ago
Adrian
2 months ago
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Great product works well fast delivery
Adrian
2 months ago
Yvette Philip
2 months ago
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Love your Root Roids as my plants are growing so fast now and healthy. I am on my second bag of the pro pack and will definitely order again.
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Yvette Philip
2 months ago
dawn hadley
2 months ago
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Being a customer of DRGT is never less than a pleasing and satisfying way to purchase premium quality products for your grow. The process is smooth, fast delivery and the DRGT team seem to really enjoy being the best at their business.
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dawn hadley
2 months ago
David Wright
2 months ago
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So far so good, prices good.will use in future
David Wright
2 months ago
Lost With Soph
2 months ago
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Customer service here was absolutely incredible. I'm so sorry but I didn't catch the gentleman's name but he was absolutely wonderful yesterday at about 4pm! Could not rate the service any higher. Bit of a drive for me but I will absolutely return in the future!
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Lost With Soph
2 months ago
Xena Purry
3 months ago
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Excellent products, a huge range of products, friendly service, and five-star seller. Thank you kindly
Xena Purry
3 months ago
Merlin Klink
4 months ago
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I had an issue with an online promotional offer and it was cleared up within a day, with the assistance of Scott. Great customer service, and I’m looking forward to shop here again
Merlin Klink
4 months ago
Tessa Frazer-Oakley
4 months ago
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Excellent product, wonderfully packaged for a speedy delivery. Friendly backup service. All ⭐️⭐️⭐️⭐️⭐️
Tessa Frazer-Oakley
4 months ago
Julie & Barney
4 months ago
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I recently bought the Foliage Focus from this store, and I couldn’t be more impressed. They have the best price I could find anywhere. The service was excellent too. I ordered online and was able to pick it up just the next day—super fast and convenient! The whole process was smooth, and I’ll definitely be coming back for more. Highly recommend if you’re looking for affordable plant care products and great customer service!
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Julie & Barney
4 months ago
Dan Webb
5 months ago
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My recent order was delivered to the wrong address (at the fault of the courier) and I was given the run around by the courier company (not naming names...).
After speaking to Scott and the team at Dr Greenthumbs, they sent out a replacement order within a couple of days. That's what I call customer service!
I love the organic Go and Grow and Bud and Bloom fertilisers. I haven't been able to find anything that comes close to ticking the natural and organic box. Highly recommended.
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Dan Webb
5 months ago
Andrea Colleoni
6 months ago
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Great products and great assistance after sale! I had some issues while placing my order, but my problem was fixed immediately.
Andrea Colleoni
6 months ago
Matthew Brennan
7 months ago
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Top notch service and advice.
Turbo dirt is 👍👍👍
Scott and the team really know their stuff. Click and collect option is always processed fast and efficiently. Stoked to have this shop in the local area.
Highly recommended.
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Matthew Brennan
7 months ago
Noah Brewer
7 months ago
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Absolutely fantastic products
Noah Brewer
7 months ago
Amy E
7 months ago
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Incredibly helpful and knowledgable people. You don't often get great customer service these days, so it's appreciated. This place is a real treasure for organic gardening supplies. I picked up some perlite in bulk here and it's really good value. I also got a bag of their 4 in 1 compost and although it's expensive compared to other brands, it's not full of c#@! — it literally looks like black gold and I can't wait to see the magic it does for my veggies.
helping keep my tropical plants able to survive the winter
recently purchased a thermostat and Cultiv8 tube heater, at first did not keep mini green house as warm as expected, then added a 2nd larger tube heater and now all working well.
I are making a good all purpose soil mix with TurboDirt as the main ingredient. I have added Biochar Kelp Meal Insect Frass and additional Worm Castings and will water regularly with Roots Roids and later on with Fruits Roids.