South Australian growers develop revolutionary new worm biostimulant


A high-performing worm extract biostimulant developed by local farmer has hit the market for the first time.

Co-founder Chris Pethick of Pethick Orchards, a fifth-generation farmer on the Fleurieu Peninsula has spent three years establishing and refining VermiGold™ Liquid Tonic.

VermiGold™ Liquid Tonic has been extensively laboratory tested and is proven to have high levels of micro-organisms with a wide diversity of beneficial bacteria, fungi and other microbes.

The high-quality biostimulant is a rich liquid extract, derived from the vermicomposting process. Once extracted, the liquid is not altered in any way.

VermiGold™ Liquid Tonic is available in commercial quantities and is suitable for agricultural, horticultural, viticultural and broad acre applications. It is also suitable for use in home gardens.

“We created VermiGold™ after previously encountering supply issues for another worm product. Producing our own allows us to control the whole process, ensuring the worms are being fed the right balance of foods at the right time. We like to think of it as a high-performance diet for worms.”

“We have vast experience in worm farming and organic waste management and are really proud of this product and excited to be able to share it,” says Chris.

VermiGold™ Liquid Tonic has so far been used commercially on Pethick Orchard’s crops, Emerald Hill Cattle Farm’s main pasture and Century Orchards in the near future.

“The product was easy to use, well produced and it is made from a South Australian Company who are great to deal with. It has promising qualities made from clean, good nutrients where there is no harm to the animals, orchards, or paddocks. It’s another tool in the overall formula of successful farming.” said Peter from Emerald Hill. Peter also stated he was “impressed with how well the dry land lucerne stand had established this year after using VermiGold™ Liquid Tonic for the first time.” 50 hectares of Almonds are currently being planted by Century Orchards, using VermiGold™ Liquid Tonic as a key beneficial for the soil.

Eligible businesses in the agriculture, horticulture, viticulture sectors or other commercial farmers can contact VermiGold to receive a free 5L sample of VermiGold™ Liquid Tonic.

About VermiGold™

VermiGold™ products are suitable for application on all soil types and across all plant species. VermiGold™ Liquid Tonic can be applied as a foliar spray, seed inoculant or in direct soil application.

VermiGold™ Liquid Tonic and VermiGold™ Fertiliser Pellets are available to purchase online at

Further detail on laboratory test results can be

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