Kate Flood is a sustainability educator and bestselling author on a mission to make composting cool. Known online as Compostable Kate, she brings humour, heart and hands-on experience to her areas of expertise, from composting to regenerative gardening. Her engaging, down-to-earth style empowers audiences to adopt simple, climate-positive habits that turn food waste from a climate liability into a valuable resource.
Kate has collaborated with global platforms like Meta to create educational videos for their climate change portal and regularly delivers her “garden gold” through workshops with councils, corporations, schools and community groups. Her bestselling book The Compost Coach (Murdoch Books) is sold internationally and has become a trusted guide for both beginner and seasoned regenerative gardeners.
A high school Food Technology teacher, self-described soil science nerd and “binfluencer,” Kate shares fun, bite-sized education with over 230,000 followers on her social media platforms, helping turn bin night into a climate solution.
With her warm, witty presence, Kate connects with audiences of all kinds. She gets people laughing, learning and rethinking the everyday habits that impact the planet. Her talks break down soil science into achievable steps, making sustainability feel doable for everyone.
Drawing on more than 15 years of teaching experience, Kate’s workshops are hands-on, engaging and designed to make complex environmental ideas easy to grasp. Whether it’s setting up a hot compost system, maintaining a worm farm or improving soil health naturally, she helps people reduce food waste and build more sustainable habits at home.
A regular gardening expert on ABC Radio and contributor to ABC Organic Gardener, Kate has also been featured in Better Homes & Gardens, The Australian, Gardening Australia Magazine, Peppermint, Pip Magazine and more. She has collaborated with leading gardening figures including Costa Georgiadis (Gardening Australia), Stephanie Alexander’s Kitchen Garden Foundation and Paul West (River Cottage Australia).
Popular Talks & Workshops Include:
Corporate Composting
A lively, team-building session where participants get their hands dirty by holding worms and smelling the magic of well-made compost. Everyone leaves with a practical system, such as a DIY worm farm, to use at home or in the office.
Composting 101
A practical talk and hands-on demo covering how to turn kitchen scraps into nutrient-rich soil. Ideal for beginners, this session includes troubleshooting tips, maintenance hacks and simple soil science to build compost confidence.
Apartment Composting Made Simple
A hands-on session showcasing compact composting systems like Bokashi bins, worm farms and in-pot soil factories, perfect for renters and small-space dwellers.
Kids & Compost
Fun and interactive sessions that spark curiosity in kids about soil, worms and sustainability. Adaptable for preschool, primary or high school students.
Garden Gold
Tailored for community gardens, this session explores large-scale hot composting, black soldier fly larvae farming and worm systems that transform garden and kitchen waste into productive soil food.
DIY Home Fertiliser
Learn how to use what you already have, such as weeds, autumn leaves and even old bones, to create regenerative soil amendments and natural fertilisers. Includes tips on using biochar and Bokashi to feed your garden instead of landfill.
Instagram for Good
A practical session on using Instagram to drive social and environmental change. Learn how to build a mission-led presence through personal branding, content creation, audience engagement and community building. Ideal for individuals or organisations looking to inspire action and grow with purpose online.