Dr Greenthumbs

Dr Greenthumbs Retailer of raw and organic garden amendments and hard to find cactus, succulent and bonsai grow mediums. Fully Stocked hydroponic and organic gardening store!

Stockists of premium organic and raw garden inputs. We also specialize in hard to find cactus, succulent and bonsai grow mediums. Affordable shipping Australia wide. Our website also hosts various Do It Yourself blogs to help you become more sustainable in your garden! Our soil amendments include;

Dr Greenthumbs Living Soil Blend - all in one organic garden fertilizer

Alfalfa meal - High Nitroge

n and triancontanol
Coconut meal - 3% Potassium
Feather meal - High Nitrogen
Malted barley soil inoculate
Mychorrhizal fungi
Neem Meal - pest repellent and complete feed
Various Rock Dusts - remineralize soil
Shrimp Meal - pest repellent, Calcium & minerals
Seabird Guano - Great Phosphorus source
Soybean meal - High Nitrogen

We have our own in house aeration and mineral grow mediums which include Gritmix All Purpose and Gritmix Seed Raising. Our individual grow mediums for Cactus, Succulents & Bonsai include;

Bentonite clay
Diatomite - various grades
Limestone
Pumice - various grades
Zeolite - various grades

29/11/2025

All that green waste in your worm farm or compost? It won’t break down fast on its own.

That’s because worms don’t actually eat the leaves , they eat the slime, fungi and bacteria growing on them.

So to kickstart the breakdown, I sprinkle in Insect Frass, and yep, it's insect poo. 💩

It’s loaded with billions of microbes and fungi that fire up decomposition, making green & brown material worm-ready in no time.

Healthier worms. Faster compost. Happier soil. Nature’s cycle, sped up, the clean way. 🌱

BFCM deals are now live 👌 My suggestion is check out this years bundles 😉😉
28/11/2025

BFCM deals are now live 👌 My suggestion is check out this years bundles 😉😉

27/11/2025

Here’s why Root Roids delivers faster, bigger results than any liquid root booster 💪

Because it’s dry-form, we can pack in way more mycorrhizae, humic & fulvic acids, kelp and microbes — no watered-down nonsense.

Most liquids? 90 % water and a premium price.

Root Roids gives you the full blend in one bag — no mixing, no extras, no empty wallet.

Been seeing mushrooms pop up after using Root Roids? You’re not alone and no, we’re not sneaking those little brown fell...
25/11/2025

Been seeing mushrooms pop up after using Root Roids? You’re not alone and no, we’re not sneaking those little brown fellas into the blend (they'd be blue if we were 😂).

What’s happening is proof your soil life’s firing on all cylinders. Root Roids is packed extra goodies like kelp extract, humic acid, fulvic acid, and amino acids.

Here’s the science bit 👇

🌿 Humic acid = the magnet that holds nutrients in your soil

⚡ Fulvic acid = the courier that delivers them straight into plant roots

🧫 Amino acids = the building blocks feeding microbes and fungi directly

That combo creates the perfect environment for fungal networks to explode, and sometimes literally overnight. So if you’re seeing mushrooms, celebrate. It means your soil’s alive, balanced, and teeming with life.

If your inoculant isn’t doing this… it’s not doing enough.

23/11/2025

We’ve been selling TurboDirt since 2017.

While plenty of brands have moved on to “Version 2” or “Version 3,” we’ve never needed to.

Because when you get it right the first time, the real challenge isn’t changing the recipe, it’s maintaining it.

That means holding tight relationships with our ingredient suppliers, staying hands-on with every batch, and refusing to cut corners just to look “new.”

Every single bag of TurboDirt is made to the same high standard we built our reputation on >> and I’ll personally guarantee it. 👊

Ever walked out after a damp night and seen water beading on the tips of your leafy greens or aroid leaves? 💦Relax, you ...
21/11/2025

Ever walked out after a damp night and seen water beading on the tips of your leafy greens or aroid leaves? 💦

Relax, you haven’t drowned your plants. What you’re seeing is guttation (yep, that’s a real word).

It’s how plants push out excess water and nutrients from inside their veins when soil moisture and humidity are high and transpiration is low...

Those droplets aren’t dew or pure water, they’re xylem sap, packed with minerals, sugars, and amino acids straight from inside the plant. And here’s the wild part: some species even use this trick to defend themselves from pests. 🪲

So next time you spot those edge droplets, don’t panic, maybe just ease up on the watering a touch and appreciate nature’s plumbing system doing its thing. 🌿

19/11/2025

Not all worm castings are created equal.

Ours are seriously mineral-dense & comes packed with fungi, bacteria, protozoa, you name it. 🦠

The secret’s in the feedstock: rich organic matter loaded with minerals, so every handful brings your soil back to life.

This 30 L bag weighs nearly 28 kg >> that’s how much goodness is packed in. 💪

It’s fine enough to mix through your potting blend, but still has those chunky little aggregates that keep air and moisture where roots love it. A little goes a long way... And your plants will show you the difference fast. 🌱

We get asked this a lot — are all your soils living? Bloody oath they are. 👊Whether it’s our orchid, cactus, or indoor p...
15/11/2025

We get asked this a lot — are all your soils living? Bloody oath they are. 👊

Whether it’s our orchid, cactus, or indoor plant mix, every bag we make is alive. We don’t do sterile, lifeless media ❌ We build ecosystems 👌

What you’re seeing here is our Seed Raising Mix.. & those white threads running through it? That’s living fungi doing their thing, teaming up with beneficial bacteria and microbes to kickstart your seedlings.

Because when your soil’s alive, your plants thrive. There’s no such thing as dead soil at Dr Greenthumbs, only living ones that grow better gardens. 🌿

Dug a hole for a fence post today and had to stop halfway 👇 look at this. That white webbing through the mulch and soil?...
11/11/2025

Dug a hole for a fence post today and had to stop halfway 👇 look at this. That white webbing through the mulch and soil? That’s fungal hyphae > nature’s underground network.

This bed’s been rolling since 2013 – 2014 and it still looks alive because the fungi are doing all the heavy lifting:

🌾 Breaking down old lucerne, bark and straw

💧 Building a moisture-holding sponge in the soil

🌱 Feeding the plants through organic matter from seasons past

This is why I don’t need to remulch hard every year, last season’s layer has become a living ecosystem.

Take care of your soil, feed it diversity, and it’ll repay you for decades. Just because you can’t see life happening underground doesn’t mean it’s not there. 🍄💪

09/11/2025

We didn’t even plan this one, gardeners told us.

After switching to Root Roids, they noticed their veg cycles running up to 10 days faster under controlled lights. ⚡️

Why? The mycorrhizae and beneficial bacteria in Root Roids dissolve nutrients through the entire pot, then buffer the pH so your plants can actually use every bit of it.

No gimmicks. No “secret sauce.” Just good biology doing what it does best > feeding your plants smarter, not harder. Give it a go and see how fast your roots (and shoots) take off. 💪

Address

4/1 Pioneer Drive
Woonona, NSW
2518

Opening Hours

Tuesday 10am - 4pm
Wednesday 10am - 4pm
Thursday 10am - 4pm
Friday 10am - 4pm
Saturday 9am - 1pm

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