Capital Compost processes about 6,000 tonnes of green waste each year. It includes food waste from Wellington restaurants and other premises collected by Envirowaste KTC and Organic Waste Management.
All of this is processed on site at the Southern Landfill, where you can buy the compost and garden products. You can also phone ahead to arrange delivery of bulk supplies.
Location and Hours
Garden products available
- Garden mix
- Potting mix
- Veggie mix
- Bark mulch
Choose the right product
The Capital Compost Product Brochure (177KB PDF) outlines the purpose of each product, and how to use it.
These products are also sold in 15L, 25L and 40L bags at the Second Treasures Shop at the Southern Landfill Recycle Centre.
Ultrasoil and topsoil are not available in bags.
These prices include GST.
You can buy bulk quantities of the garden products Monday to Friday during landfill hours. They can either be delivered or loaded onto your trailer. Come through the weighbridge to buy the bulk compost products.
We can also deliver Monday to Saturday if you make arrangements beforehand.
Bulk prices are per m³ and include GST. Delivery prices are available on request.
How the compost is made
We shred the organic waste. Through regular turning, we can get the garden waste to break down more quickly and at a more constant and higher temperature than most people achieve at home.
When 'cooked' (takes about 3 months), we screen it to get consistently-sized particles so that garden nutrients can be easily released.
We then get a sample of the compost tested to make sure it meets the Composts, Soil Conditioners and Mulches Standard. Samples are also tested for weeds and any other contaminates that aren't good for the soil. When it has the all-clear, the compost is either put up for sale or used to make other materials in our garden range.
All Capital Compost's products are sample tested to make sure they are 100% weed-free and organic.
Capital Compost Grant
Each year the Council sets aside some Capital Compost to help schools, childhood education facilities and community garden groups to create food gardens, or complete native plant-restoration projects.
Eligible organisations can apply for the grant every two years. Transport costs are not included. The grant is usually exhausted within a few months.
Capital Compost Grant application form