Name: Gaia Green Glacial Rock Dust
Brand: Gaia Green
SKU: GAGGRD2KGP
Price: 15.95 USD
Availability: InStock
Rating: 5.0 (27 reviews)

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A standing green pouch of Gaia Green Glacial Rock Dust, an organic fertilizer supplement with a glacier photo label.

A large brown paper bag of Gaia Green Glacial Rock Dust, a mineral soil amendment for plants and gardening.

One rock dust, minerals from dozens of rocks

Gaia Green Glacial Rock Dust is glacial moraine, the fine powder an ice-age glacier left behind after grinding together every kind of rock in its path. That mixed origin is why it carries such a broad range of minerals and trace elements, more sources than any single rock could provide. You can't over-apply it, it won't burn, and it keeps feeding the soil long after you mix it in.

Ecocert-approved for organic use Minerals from many rock types Won't burn, apply generously

Free shipping on orders over $49

30-day returns on all orders

Serving growers since 2006

Why it's different

A bottled micronutrient supplement vs. Gaia Green Glacial Rock Dust

Bottled Micronutrient Mix

Delivers a few chelated micros in fixed ratios
Salt-based, so overdoing it can burn
Washes through and needs re-dosing every feed
Does nothing for the soil's ability to hold nutrients
Nothing you'd add to a compost pile
Manufactured and shipped as a liquid concentrate

Glacial Rock Dust

A broad mix of minerals from many rock types at once
Inert rock, so you can apply generously without burning
Slow-release, so one application lasts a long time
Raises cation exchange capacity so soil holds more nutrients
Enriches compost piles with trace elements too
Mined, dried, and screened glacial moraine, nothing added

Why glacial rock dust is different: many rocks, and a soil that holds more

Glacial rock dust is glacial moraine, mined in Canada. As ice-age glaciers ground their way south, they scraped up and pulverized whatever bedrock they crossed, then dropped it in deposits as they melted. That history is the point. Instead of one rock type, you get a fine powder blended from many, which is why glacial dust carries such a broad range of minerals and trace elements.

It also changes how your soil behaves. Those fine mineral particles add surface area and charge sites that raise the soil's cation exchange capacity, the measure of how well soil grabs onto positively charged nutrients like potassium, calcium, and magnesium and hands them to roots. Higher capacity means your soil holds more of what you feed it and leaches less out the bottom of the pot. You aren't just adding minerals, you're helping the soil keep them.

What makes it different

The broad-spectrum mineral layer for your soil

Minerals from many rocks, not one Ecocert

A glacier ground together countless kinds of bedrock as it moved, so glacial moraine carries a wider mix of minerals and trace elements than any single-source rock. One amendment, many mineral sources.

Helps soil hold more nutrients

It lifts the soil's cation exchange capacity, so the soil hangs onto more of the nutrients you add rather than letting them drain past the roots.

Magnesium, iron, and manganese

A guaranteed source of magnesium, iron, and manganese, plus a long tail of trace elements, the micro-minerals that quietly run down in soil you reuse.

Apply generously, won't burn

It's inert rock with no salt load, so there's genuinely no way to overdo it. Safe to mix in anywhere, from seed trays to established beds.

Feeds your compost too

Stirred into a compost pile, it adds trace minerals and gives the microbes more to work with, so the finished compost comes out richer.

The trace-mineral half of your program

Where All Purpose 4-4-4 handles the NPK and Worm Castings bring the biology, glacial rock dust covers the broad micro-minerals. Many growers layer all three.

Specs

Numbers and details

Guaranteed Analysis

Mg 0.9%, Fe 3.0%, Mn 0.05%

Ingredients

100% Canadian glacial moraine

Organic Status

Ecocert-approved for organic use

Also Improves

Soil structure, drainage, and CEC

Outdoor and turf rates

Gardens and landscapes: broadcast and lightly work in up to 1.2 kg per square meter, about 0.25 lbs per square foot, once a year. Turf: broadcast at the same rate and water in thoroughly. Container rates are in the usage steps just below.

Four ways to use it

1

Pre-mix into fresh soil

Blend 1 tablespoon per gallon, about 15 ml per 4 L, into potting mix or bagged soil and mix it in thoroughly before planting.

2

Top-dress established pots

Add 2 tablespoons per gallon, about 30 ml per 4 L, gently dug into the soil surface up to once a month, then water in.

3

Broadcast beds and turf

For gardens, landscapes, and lawns, spread it at the outdoor rate in the specs above, then water turf in well.

4

Boost your compost

Mix a few scoops into a compost pile as it builds. It adds trace minerals and feeds the microbes, so the finished compost comes out richer.

In the bag

What you're getting, and what to pair it with

Every bag delivers

100% Canadian glacial moraine, nothing added
Guaranteed magnesium, iron, and manganese
A broad range of trace elements from many rock types
Better soil structure, drainage, and moisture retention
Higher cation exchange capacity for holding nutrients
Ecocert-approved for organic growing

Size and what to pair

Comes in a 2 kg / 4.4 lb resealable pouch
You can't over-apply it, so measuring is forgiving
Pair with All Purpose 4-4-4 and Worm Castings for a full program
Want more minerals? Add Basalt Rock Dust or Greensand for a different mineral profile

Not sure how it fits your soil? Tell us what else you're running and we'll help you place it. 716-217-0353 / help@happyhydro.com

Questions

Frequently asked questions

How is this different from basalt and greensand?

All three are slow rock-mineral amendments, but each has its own strength. Glacial rock dust is a blend of many rock types, so it brings the widest spread of trace minerals and it raises the soil's ability to hold nutrients. Basalt Rock Dust is a single volcanic rock, leaning toward silica. Greensand is marine glauconite that adds potassium and loosens or holds soil texture. They complement each other, so plenty of growers use more than one.

What is cation exchange capacity, and why should I care?

Think of it as your soil's grip on nutrients. Cation exchange capacity is how many positively charged nutrients, like potassium, calcium, and magnesium, the soil can hold onto and release to roots on demand. Soil with a higher capacity wastes less of what you feed it, buffers swings better, and stays productive longer. The fine mineral particles in glacial rock dust are one way to nudge that number up.

Can I really not over-apply it?

Right, there's no burn risk. It's inert rock with no soluble salt, so extra just means more minerals and a bit more conditioning rather than stressed plants. That said, there's no real benefit to burying a plant in it either, so the label rates are still a sensible guide. Being a little generous is fine.

Do I still need to fertilize if I use this?

Yes. Glacial rock dust supplies minerals and trace elements, not the nitrogen, phosphorus, and potassium your plants need to grow and flower. Treat it as the micro-mineral layer of your soil and run it alongside a real feed like All Purpose 4-4-4, switching to Power Bloom 2-8-4 for flowering.

How much should I add to my compost?

There's no strict rate for compost, which is part of the appeal. A few generous scoops worked through a pile as you build it is plenty. The minerals give the composting microbes more to work with and end up woven through the finished compost, so it comes out richer than it went in. Because it can't burn, you don't have to be precise.

Can I use it in coco or hydro, or only soil?

Soil, coco, raised beds, and compost are all fair game, and reused or living soil benefits most since the minerals have time to weather in. It's a fine solid dust, so it doesn't belong loose in a recirculating hydro reservoir where it would settle and clog lines. In containers it works as both a mineral top-up and a light soil conditioner.

What if I receive a damaged bag or the product isn't right for my setup?

If you receive a defective or damaged unit, email us a photo at help@happyhydro.com and we'll make it right immediately. For change-of-mind returns, we accept returns within 30 days for items in new, resalable condition. If you're not sure whether this product is right for your setup, call us first at 716-217-0353. We'd rather answer your questions before you order.

Why should I buy Gaia Green Glacial Rock Dust from Happy Hydro instead of somewhere else?

Happy Hydro has been selling growing equipment since 2006. We've carried Gaia Green for years because the systems work great and customers who buy them leave happy. Have questions before you order? Call 716-217-0353 or email help@happyhydro.com. We're easy to reach and happy to help!

Why Happy Hydro

Why Buy From Happy Hydro

Happy Hydro began as a pipe dream in a garage and has grown into something built almost entirely on word of mouth and repeat customers. Rather than focusing on raising margins and obsessing over profits, we've always believed that the right combination of competitive prices, superior products, and world-class customer service speaks for itself. Our philosophy will never change: when you're happy, we're happy.

Our commitment

What you can expect from Happy Hydro

Real People, Real Growers

Our grower support team isn't a call center. They know the products because they're passionate about growing. Reach us Monday-Friday, 10 am-4 pm EST at 716-217-0353 or help@happyhydro.com, before you order or after.

Hand-Picked by Growers, for Growers

Every brand we carry was chosen by our founders because it performs. We only stock premium brands we believe in, and every item is inspected before it leaves our warehouse.

Fair Prices and Free Shipping

We work hard to keep our prices as low as manufacturers allow, and we include free shipping on orders over $49 so there are no surprises at checkout. Find a lower price anywhere and we'll match it.

Authorized for Every Brand We Carry

We're an authorized dealer for every manufacturer on our site. That means you get the full manufacturer's warranty on every purchase. No grey market, no expired stock.

30-Day Returns on Most Orders

Hard to commit to a product you haven't tried. Return most items within 30 days in original condition and we'll take care of it. Read the full policy.

Secure Shopping, Private Data

Every transaction is SSL encrypted. We don't store payment information and we will never sell your data to anyone, ever.

Volume and Commercial Pricing

If you're a commercial grower or putting together a large order, reach out before you buy. We have pricing available that we can't advertise publicly. Call 716-217-0353 or email help@happyhydro.com and we'll take care of you.

Questions? We're easy to reach.
Happy Hydro has been serving growers since 2006. Call or email our grower support team Monday-Friday, 10 am-4 pm EST, or email us anytime.

716-217-0353 help@happyhydro.com

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Gaia Green Glacial Rock Dust

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