Fit for Purpose and Certified Organic Products. Our Quality Management Systems ensure you can rely on consistent product and service performance.


Where can I buy C-Wise products?
Orders of 15m3 or above can be ordered or picked up directly from C-Wise in Nambeelup. Smaller loads or bagged products can be purchased from our retailers.
How do I use composted products?
For most of our products, application is done by either topdressing on the surface, or by incorporation into the soil. You can find guides specific to your situation in the application guide section.
Where is the price list?
This mythical beast refuses to be tied down. For information on the latest sightings, please contact us
Why do you quote by the cubic meter and not the tonne?
The finished water content of compost can vary according to the time of year, which means the weight changes as well. To be sure that you are getting the same amount of ‘active ingredients’ year round, we supply on the basis of volume, which remains consistent.
Can we pick up?
If you have a truck, the answer is yes. If you are bringing your ute or trailer we ask you to go to one of our retailers who have the right size machinery to load you.
What is the minimum load size?
Load sizes of 15m³, 20m³, 25m³, 40m³, 45m³ or 80m³ can be picked up or delivered directly from our main site at Nambeelup. Smaller loads or bagged products can be purchased from our retailers.
Where is C-Wise based?
C-Wise is based in Nambeelup, East of Mandurah in Western Australia, and we are investigating other locations.
Where do you deliver?
Anywhere from Esperance to Port Headland within WA, but we can make arrangements to suit your needs.
What is the lead time for orders?
3 to 4 working days for deliveries, or 1 days notice for pickups.
Can you do custom blends for me?
Yes, we can arrange this for you according to your needs.
Can I use compost to replace inorganic fertilisers?
Short answer: yes. Long answer: Yes, but you can also use it in combination with inorganic fertiliser in ways that can increase the efficiency of the fertilisers you apply. You can read more in the learning centre.
Can you blend in inorganic fertilisers for me?
Yes, we certainly can, at some additional cost.
What is the nutrient content of your composted products?
The nutrient contents of our products can be found here. Nutrient content numbers are only part of the story however, please look at the articles in our learning centre for a full explanation.
I am a home gardener, how do I use compost?
Please see our application guide section.
I am a professional grower, how do I use compost?
Please see our application guide section.
What does maturity mean?
Maturity is a measure of how far a product has gone through the composting process. It is loosely linked to age, but lots of factors come into play. High maturity products have excellent soil health benefits, while lower maturity products are more suitable for nutrient supply. Please see the learning centre for more information.
How do I judge compost quality?
The criteria we use are particle size, and maturity. Quality is very hard to pin down because different products are fit for different purposes. What is more important is to understand your own needs, and what sort of products could fit those needs. More detail can be found in our choosing a compost article in the learning centre.
Why should I use compost?
We sort of hoped we might have convinced you by now. Seeing as we haven’t managed it yet you can go and look at us waxing lyrical in the learning centre.
Can I come and visit?
We love to show people around, but we have a very busy site with very busy people, so we prefer to have groups of people come rather than individuals. Give use a ring to organise a tour for your group, bring cake to unlock extra tour levels.
How do I arrange spreading? Can you do it for me?
Large volumes are generally spread with a multispreader (any spreader with a moving belt and spreading attachment at the back). If you don’t have access to one we can arrange spreading for you, or we have two spreaders for hire so that you can do it yourself.
Do you do soil tests?
C-Wise can arrange soil tests, and help you interpret them. Contact us to talk about your needs.
Where can I learn about compost/composting?
We have a wealth of knowledge at your disposal in the learning centre. We run composting schools for MAF customers, and are considering running composting schools for all comers if the demand is high enough.
What application rates should I use?
Somewhere between 0.5 and 30mm thick (5 to 300 cubic metres per hectare). Please contact us or look at our application guide section.
Do you have organic composts?
We certainly do. Half of our production area is certified organic and we have a range of composts that are certified organic inputs.
What does organic certification really mean?
Certified organic input means that we have had all of our ingredients and our composting process checked and signed off by one of the organic certifying bodies in Australia as being appropriate to use in producing organic certified food. We are currently certified by BFA .
What is good for (insert my plant or crop here)?
Please see our application guide or contact us to discuss
Why is soil carbon important?
Soil carbon is the backbone of everything that happens in the soil. It is related to soil biology, plant health, soil water, soil structure, soil nutrient holding capacity, and more other things than we have space for. You can find out a lot more in the learning centre
What liquid wastes can you take?
We can take most liquid wastes that can be safely composted. Contact us or check out our waste section for details about the DER controlled waste categories that we accept.