The what, why, and how of composting

Dr Compost, aka Ben Elms, has been sharing his composting and gardening knowledge with Queenstown Lakes locals through his fun and informative workshops, one-on-one advice and articles for over a decade.

We cornered Ben at our Sustainable Queenstown Green Drinks event last week to ask some of your burning composting questions.

Let’s dive right in!

Is composting really that important?

Absolutely! Composting not only reduces the amount of waste in our landfills, but it also creates nutrient and biologically rich soil that’s magic for growing all kinds of plants, veggies, shrubs and trees.

What’s the difference between composting and recycling?

Great question! Composting involves breaking down organic materials like food scraps and yard waste into a nutrient-rich soil amendment. Recycling involves processing non-organic materials like plastic, glass, and metal to be reused in new products. Both are important for reducing waste, but composting has the added benefit of creating valuable nutrients for your garden.

I’m renting and have no outdoor space. Can I still compost?

Absolutely! There are indoor composting systems available that work well in small spaces. Vermicomposting, where you use worms to break down food scraps, is a great option. You can also use a Bokashi Bin indoors or find a community composting site near you. Worms and Bokashi Bins are subsidised by QLDC for locals – making it really affordable to start!

What are the benefits of using a Bokashi Bin for composting?

Ah, one of my favourites! The Bokashi Bin method is great because it allows you to compost a wider variety of materials, including meat, fish, dairy, and citrus fruits, that may not break down as easily in a traditional compost bin. Plus, it produces a pre-compost material that can be added directly to soil, speeding up the process of creating nutrient-rich soil.

What are some common mistakes people make when composting?

The biggest mistake I see people make is adding too much of one type of material to their compost bin. Ideally, your compost bin (not Bokashi Bin) should have a mix of “green” materials like food scraps and “brown” materials like leaves or shredded paper. It’s important to keep your compost bin moist and turn it regularly to ensure even decomposition.

How long does it take for compost to be ready to use?

Composting can take anywhere from a few weeks to several months, depending on the type of system you use and the materials you put in. When the compost is dark brown and crumbly, and you can no longer recognise any of the original materials, it’s ready to use in your garden.

Composting may seem intimidating at first, but with a little knowledge and practice, it’s a simple and rewarding way to reduce your environmental impact and grow healthy plants & veggies. Remember to always check local regulations and guidelines for composting, and don’t hesitate to ask for help from experts like Dr Compost. Thanks Ben!

Wastebusters delivers the Dr Compost home-composting programme in Queenstown and Wānaka under contract to Queenstown Lakes District Council. Check the Dr Compost Facebook page to see if there are any veggie growing or composting workshops scheduled soon.

Dr Compost can also solve any composting dilemmas for Queenstown Lakes residents, and give you personalised advice to get your composting system humming. Email him your questions to: drcompost@wastebusters.co.nz

qldc-drcompost-november2024-composting

From our General Manager - Na Tō Tātou Kaiwhakahaere

This year our amazing Wastebusters whānau has been busy keeping everything we can out of landfill and supporting resourcefulness in our community while also working on bringing our dream of Wastebusters 2.0 into reality.

We were humbled and absolutely stoked to take home the Wānaka Chamber of Commerce Business Awards Supreme Business Award, along with the Community Contribution and Business Sustainability awards. This success was a powerful recognition of the dedicated mahi of our entire team, giving us huge confidence for the ambitious journey ahead.

We welcomed Aviette Musin on a fixed-term contract as our new Programme Manager for Wastebusters 2.0. Her expertise provided the dedicated, focused capacity needed to accelerate progress on this strategic goal.

Funding was secured through Queenstown Lakes Community Composting Project for the Compost Collect pilot, a joint venture with our neighbours Wānaka Greenwaste that will turn commercial food scraps into valuable compost, launching in 2026. We also intensified our focus on Construction and Demolition (C&D) materials, trialling diversion methodology and securing initial partnerships to divert waste from landfill. With our current site so space-constrained, we are extremely limited in the C&D materials which can be accepted for reuse, but this work will lay the groundwork for future diversion on a bigger site.

We made a compelling case to the Council for the necessary land expansion for Wastebusters 2.0 and prepared for the MfE Waste Minimisation Fund application process to support our expansion plans. 

A continued focus for us this year has been on strengthening the Wastebusters whānau and ensuring we are equipped not just for the daily challenges, but for future growth. We continued to be a Living Wage employer, reflecting our commitment to the well-being and value of our staff. Feedback from the team via staff survey results highlighted strong morale and resilience within our workplace culture with 89% saying they enjoy working at Wastebusters and 93% feeling cared for by their manager. 

The district’s rapid growth brings challenges as well as opportunities, particularly the Ballantyne Road/Riverbank Road roadworks which demanded flexibility and good humour from our team and customers throughout 2024. Despite the road cones, ongoing community support ensured our Reuse Shop continued to be a first choice destination for both locals and visitors. Improved donation flows and adding new changing rooms has made the shop operation smoother and more efficient for everyone.

Wastebusters’ partnership with events continues to go from strength to strength: including the trial of a food scraps collection from vendors. And our Recycle team did the huge job of relabeling all our events recycling bins to align with national recycling colours, making it easier for event-goers to know what to do. Wastebusters recycling trucks continue to be a much-loved presence in town servicing our 408 business customers, with the team doing a great job of keeping our aging fleet serviceable, in line with our kaupapa of keeping resources in use for as long as possible. 

Our Reduce team has continued to deliver exceptional impact, with more than 11,000 people engaged in person through our education and engagement in the community. The Resourceful Communities programme inspires our community to take action and builds the knowledge and know how to engage in areas like repair, low waste living and textile waste diversion. It is proudly supported by QLDC’s zero waste district’s programme which recognises the impact of community connection for zero waste action. 

We were stoked to join Environment Hubs Aotearoa, and we look forward to collaborating with this network and amplifying our collective impact on environmental action and resourcefulness across Aotearoa.

We worked with an impact consultant to implement an evaluation framework and behaviour change model to better plan, deliver and measure our impact, and have begun rolling out our learnings across all our programmes.

It was a busy year in advocacy, starting with participation in QLDC’s Waste Management and Minimisation Plan process. We appreciated QLDC’s approach in bringing Wastebusters and other stakeholders in early in the process, which has resulted in a constructive plan for the next six years. Wastebusters has also made submissions on national and local level, including The Right to Repair Bill, the Container Return Scheme and the publicly notified resource consent for McDonald’s in Wānaka.

Ultimately, this year has been about delivering impact while building the foundations for a much larger and even more impactful operation, securing Wastebusters’ future for our community. The heart of our work remains resource recovery and community engagement, and we enter the next 25 years of zero waste leadership with great confidence, welcome community support and an unwavering focus. 

Gina Dempster

General Manager

November 2025

wastebusters yard team summer fair 2024

Wastebusters Community Survey is live!

Let us know what you love & what we could do better & you’ll go into the draw to win a $250 restaurant voucher!