Soil Conditioner
For ground that is already there and has stopped performing.
Soil Conditioner is 100% organic compost, worked into soil you already have rather than used to fill a bed. It lifts organic matter, holds moisture and gets microbial life going again in tired or depleted ground. Produced to Australian Standard AS 4454, it is a WALGA preferred product, sold loose by the cubic metre, in bulka bags, or by the trailer load.
Or call the yard on (08) 9434 2290

Real stock, not a swatch. Blended products vary a little batch to batch, so treat these as a guide rather than an exact colour match.
Soil Conditioner details
Soil Conditioner at a glance
- Product type
- Organic soil conditioner
- Composition
- 100% organic compost
- Standard
- Australian Standard AS 4454
- Recognition
- WALGA preferred product
- Primary use
- Improving structure and fertility in soil you already have
- Available as
- Loose, bulka bag, trailer load
What Soil Conditioner suits
What can you use Soil Conditioner for?
Reviving tired or depleted soil
Soil that has grown the same thing for years runs down. Working compost through it restores organic matter and microbial activity, which is what makes the difference between soil and dirt.
Garden beds that are full but underperforming
Where the bed is at the right level and the plants are simply sulking, this is the product. You are improving what is in the bed rather than adding to the top of it.
Vegetable patches between crops
The client lists vegetable patches specifically. Vegetables take a lot out of a bed in a season, and turning compost through it before the next crop goes in is the standard way to give it back.
Topdressing a lawn
It is listed for lawns too, where it adds organic matter and moisture holding to the top layer. It will not level anything — for that, Special Lawn Mix is the one with the body to fill hollows.
How much Soil Conditioner
How much Soil Conditioner do you need?
Length by width by depth, all in metres, gives you cubic metres. For a bed 4m by 1.2m filled to 75mm, that is 4 × 1.2 × 0.075 = 0.36 m³.
It is an estimate. Uneven ground and how firmly the mix settles both change what you actually use, so round up rather than down. We have not published a recommended depth for this product — describe the bed at the counter and someone who works with it every day will tell you.
Whatever you work out here lands in the enquiry form below, already written down.
That is about one trailer load. Order a touch over rather than under — a second trip costs more than the extra scoop.
Soil Conditioner in Perth
Is Soil Conditioner suitable for Perth soils?
This is the product Perth's ground argues for more than any other in the range. Most of the southern suburbs sit on deep, free-draining sand that holds almost no organic matter, so water and nutrients travel straight down through it and past the roots that were meant to get them.
Sand that has dried out repeatedly makes it worse by going water-repellent, where water beads on the surface and runs into the cracks instead of soaking in. Adding organic matter is the standard local answer to both problems, and that is precisely what this is.
It is also why the client calls it water wise. Under a sprinkler roster, the water a soil holds between watering turns is the water the plant actually gets, and organic matter is what does the holding.
One honest caveat. If your sand is badly repellent, compost alone will improve it but is unlikely to cure it — the products that change the sand itself are clay-based, or a wetting agent. Describe what the water is doing when you call and you will get a straight answer about which order to do things in.
Why Soil Conditioner
Why choose Soil Conditioner?
100% organic compost, and nothing else
There is no filler and no sand making up the volume. Everything you are paying for and spreading is organic matter, which is the only part of a conditioner that does any work.
It holds moisture and still drains
The client describes it as water wise: compost worked through soil retains moisture in the root zone while still letting water move, so a bed is neither parched nor waterlogged.
Made to AS 4454, and WALGA preferred
AS 4454 is the Australian Standard for composted soil conditioners, so it is a specified product rather than whatever came off the pile. WALGA preferred status is why councils and professional landscapers across WA use it.
You are not paying for volume you cannot use
For a bed that is already at the right height, a conditioner is the cheaper and more useful purchase. A mix would raise the level you did not want raised and cost you more to do it.
Getting Soil Conditioner home
How to get Soil Conditioner
Collect from the yard
Open seven days at 222 Barrington St, Bibra Lake. The loader puts it straight into your trailer or ute, and someone will tell you whether what you have brought will carry the load.
Borrow one of our trailers free for two hours to get your load home. No charge, no bond.
Have it delivered
Across Perth's southern suburbs, seven days. For a quote we need the address, how much you need, and anything awkward about access — tight driveways, low branches and side access all change which truck we send. Confirm the current cost when you order.
Formats
- Loose, by the cubic metre
- Bulka bag, roughly a cubic metre each
- Trailer load, including our free two hour trailer
Using Soil Conditioner
How to use Soil Conditioner
Work out the area, not the volume
A conditioner is spread far thinner than a mix, so cubic metres of bed is the wrong sum here. We do not publish an application rate, so bring the area you are covering and we will work the quantity out with you at the counter.
Clear the surface first
Take out the weeds and anything woody. You are about to dig this through the top layer, and whatever is on the surface goes in with it.
Spread it across the bed
Spread it evenly over the whole area rather than heaping it where the plants look worst. Uneven conditioning gives you a bed that performs unevenly for years.
Mix it into the existing soil
Turn it through the top layer of what is already there. Mixing in is the step that matters — compost left sitting on the surface is behaving as a mulch, which is a different job.
Water it in
Water thoroughly once it is turned through. That settles it into the profile and gets the microbial activity going, which is the part you actually bought.
Do it again next season
The client's own advice is that regular use is what builds a thriving, nutrient-rich soil. Organic matter is consumed by the soil over time, so one application is a start rather than a fix.
When to choose something else
When it is the wrong product
- It is a conditioner, not a mix. If the bed is empty, or you are building one up from scratch, you need Landscape Mix, Veggie Mix or Native Soil Mix depending on what is going in it.
- It will not add usable volume or level anything. Do not buy it expecting to raise a bed or fill hollows in a lawn — that is what a mix does, and Special Lawn Mix is the one for turf.
- We do not publish an application rate or a spreading depth for it. Bring the area of the bed to the counter and we will talk it through, rather than have you work off a number we made up.
- It is not a fertiliser and we do not publish a nutrient analysis. It improves what the soil can do with nutrients; if you need a specific NPK for a crop, that is a separate product and we will point you at it.
- On its own it will not cure severe water repellence. Compost helps, but sand that has gone properly waxy usually needs a clay-based product like bentonite or Soil Solver, or a wetting agent, to change the sand itself.
- Spread on the surface and left there it is behaving as a mulch, not a conditioner. If you are not going to dig it in, Mushroom Compost is blended to do both jobs and is the better buy.
Customer reviews
What people say
Soil Conditioner questions
Soil Conditioner FAQs
Goes with Soil Conditioner
Other products you may need
If the bed is empty, you need a mix
A conditioner improves soil. These are what you fill or build a bed with.
For sand that sheds water
Where compost is not enough on its own, these change the sand itself.
Feeding as well as conditioning
For a bed that wants nutrition put back into it, not just structure.
Guides for soil conditioner
Planning your project
SoilSandy Soil Converts to Nutrient Rich Soil with Organic ConditionersBibra Lake Soils13 March 2018 · 4 min read
SoilHow to Improve Soil Quality in AustraliaBibra Lake Soils18 September 2023 · 4 min read
SoilBentonite ClayBibra Lake Soils10 January 2020 · 3 min read
SoilGO Organics Soils vs Regular Soils: A Comparison GuideBibra Lake Soils7 October 2022 · 4 min read
Soil Conditioner quote
Need Soil Conditioner for your project?
Send us the quantity you need, your suburb, and whether you would like to collect it or have it delivered. If you are not sure how much, put your measurements into the calculator above and we will check it for you.
Or ring the yard on (08) 9434 2290
222 Barrington St, Bibra Lake WA 6163 · Open 7 days
Use the calculator above and the amount lands in the message for you.













