Biocast+ by Island Biologicals

Growth as Nature intended.

At Island Biologicals we believe that life creates life. Supporting plant health and vigour through biology is what we do. We also believe in creating products that you feel good about applying, and that will be good for you and the planet. It’s about growth, as Nature intended.

What we do:


Biocast+ is our signature product. It is a fully stabilised liquid vermicast extract packed with living microbes and natural plant-stimulating compounds to help your plants thrive.

Click here for more info!

Other services

We offer compost worms, worm cast, worm farm tours, educational talks and workshops, and compost/ vermiculture consultancy services.

Click here to learn more!

“The health of the soil, plant, animal and man is one and indivisible”

Sir Albert Howard

News & grower stories

A Forest for Coralie

A Forest for Coralie

This week our daughter Coralie turned 1. She got gifts from grandparents, aunts and uncles, but not a thing from us. That's because we're buying her (part of a) forest. Watching her play, we know Coralie is best entertained at this age by real world things - chairs...

Grower stories: Del’s backyard

Delwyn Thomas. Horticulturist, Floriculturist and design Florist, author of 'What Cut Flower is That'. "Almost three years ago in late spring, Lee offered to spray my garden with Biocast+. Within a few days I was fascinated to notice there was no powdery mildew on the...

Grower stories: Peter’s orchids

Peter Bisoglio. Former owner and grower at Forest Glen Roses, Glenorie. "As a former nurseryman and cut flower grower I am quite passionate about and spend considerable time planting , maintaining, tending and extending my garden, I grow a range of vegetable crops to...

Why we love regenerative agriculture

You may not have considered it, but regenerative agriculture applies even to worm farmers, like me. I love being part of people’s regenerative journeys, and it has reinvigorated my passion for what we do. Our farm is on Oxley Island, an island in the delta of the...

> If you have a Biocast+ story to share we would love to hear it! Call or email Lee on 0427 197 596 or
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One of our favourite parts of business is chatting with people interested in exploring biological solutions. We are happy to discuss how Biocast+ or our other products and services apply in your particular situation, so please contact us today!