Biocast liquid vermicast biostimulant

Biocast: liquid vermicast biostimulant

By Island Biologicals

National Tree Day special

50% off Biocast (excluding postage) for school and community groups wanting to use it for revegatation projects

Offer ends Sunday, 28 July 2024

To participate, please contact us

Life Creates Life

Welcome to the home of Biocast! If you’re looking to grow plants that are full of LIFE, from soil to seed, then you’re in the right place.

At Island Biologicals we believe that life creates life. Biocast supports the whole plant, including its microbiome, thanks to the life-stimulating compounds of earthworms and beneficial microbes. As a grower it can support you to add health and vigour to your high production systems, to get plants through stressful times (such at transplant, or climate extremes), or give you a stepping stone to get off the inputs treadmill. It is a high quality, natural biostimulant that you can feel good about applying, and that will be good for you, your family, your customers and your land.

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

Sir Albert Howard

What is Biocast?

Biocast is a liquid vermicast biostimulant. What that means is that we’ve extracted our high-quality worm poo (cast) into water, and with it all the life-stimulating compounds produced by the worm and associated microbes. These include living microbes (bacteria, fungal spores, and protozoa), growth-stimulating hormones, enzymes, autoinducers (signalling molecules), fulvic acid and trace minerals. These all work together to benefit plants and soil life. Biocast can be applied as a foliar, seed dressing, transplant drench or through fertigation systems.

Click here for more general information on Biocast.

Bottles of Biocast

Product information

Go here for information on:

    • What is Biocast
    • Part A and part B explained
    • How Biocast is made
    • Quality assurance
Biocast foliar application


Go here for information on:

    • Foliar (leaf) application
    • Soil application
    • Transplant drenches
    • Seed inoculation

Made in the Manning by Island Biologicals

Biocast is made by Island Biologicals. We are an Australian, family-owned and operated company based on Oxley Island, part of the beautiful Manning Valley of NSW. Our founder and Chief Worm Wrangler is Lee Fieldhouse, who has a passion for working with natural processes to bolster food production.

Our mission is to help Australian farmers add more life to our land by reconnecting with and working with natural processes when growing plants.

Find out more about us here >>

News & grower stories



Let’s talk dreadlocks. Not for you, for your plants! Why does the hair style of your plant’s roots matter? When you dig up a plant your want to see dreadlocks along the full length of the roots because it means that the plant has a beneficial connection to soil...

Worms 4 Climate Action

Worms 4 Climate Action

PRESS RELEASE. 20 September 2019 Global Climate Strike. In an unprecedented move, millions of workers at Island Biologicals have gone on strike this morning, to highlight the need for humans to act on global heating. "We're doing all we can" said spokesworm Alex...

Bring a shovel

Bring a shovel

If being able to see what is happening underground is the gateway to great management of your plants, then the humble shovel is the key. Don't leave home without one!  If you're only looking above the ground, you're only looking at half the story. We have a patch...

Five tips for improving water infiltration

Five tips for improving water infiltration

Whether your water's coming from rain or irrigation, you want it getting where it counts - down to the root zone of your plant; and, ideally, deep into the soil to keep things ticking on later too. We don't want to waste that light sprinkle with it all evaporating...

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...

> If you have a Biocast story to share we would love to hear it! Call or email Lee on 0429 197 596 or [email protected]


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!