Your PDC Guest Teachers

Limestone Permaculture is fortunate to have a swag of highly skilled teachers across a range of environmental disciplines and all within our local region.  Their diversity of backgrounds, skills and approaches guarantees inspiration & greater understanding  within your course learning experience!

Botany & Horticulture @ Limestone

Marnie Johnson 

Marnie is an experienced gardener and long-term permaculture practitioner. Moving to Gloucester NSW in the early 1990’s she studied horticulture, obtained her TAE and is now a qualified horticulture trainer and assessor.

Marnie has worked within her community & government organisations for years  demonstrating & training others in plant-based food system set-ups, horticulture and marketing of organic vegetables, fruit and herbs.

Marnie will be presenting our ‘Plants in Permaculture’ unit for Limestone Permaculture’s PDC course.

Marnie believes strongly in sharing knowledge and experiences and is continually learning from others and trialling different methods to adapt to the changing conditions and circumstances!






Yeo Farm > Farm Visit

Regenerative Farming

Andrew & Emma Yeo

Haling from a traditional farming background in the mid-west of NSW, Andrew & his wife Emma moved to Bulahdelah to become modern regenerative farmers & grow a thriving farm business.

Andrew is improving their beautiful property daily using permaculture principles & regenerative practices, his vision is to have a resilient lifestyle that provides healthy fresh food for his family and community whilst enhancing the fertility of his farm.

Holding a Permaculture Design Certificate & various other holistic and regenerative farming skills, Andrew practices & demonstrates Yeoman's 'Scale of Permanence' and 'Permaculture' as an overreaching philosophy to plan & future proof 'Yeo Farm'

Their water retention land-forming techniques has enabled Andrew & Emma to run a successful 'paddock to plate' lamb operation inside a short time frame and through one of the driest season in 40 years.

Yeo Farm demonstrates real regenerative farming techniques & practices which will value add your course learning experience!

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Andrew creating swales in paddocks_edite

Permaculture Homesteading > Farm Visit

Marnie & Ken Johnson -  Misty Ridge Farm

Ken and Marnie moved to their 300 acre property 'Misty Ridge' located in the foothills of the beautiful Gloucester Tops & near the town of Gloucester during the mid 1990’s, with climate change in mind and started developing the property from scratch using permaculture and sustainable principles.

Their background as educationalists, Ken’s practical skills and Marnie’s horticultural qualifications have been put to good use during their time in Gloucester.

They have spent the last 25yrs developing their property which includes:

- Passive solar house

- Organic Certified Herb & Vegetable Business

- Terraces and swales to retain water

- Built micro-climates to shelter various crops 

- Re-vegetated cleared land for wildlife preservation. 

- Small Nursery business.

- Producing olive oil for their own needs with surplus being sold.

- Honey & Egg production


Ken and Marnie have successfully demonstrated it is possible to be relatively self sufficient and earn an income from what was considered “rubbish land”.


They have trialed and developed many efficient watering methods, soil development techniques and are currently investing in wicking-bed systems.

They continue to teach and share their knowledge with anyone who is interested.

They are environmentalists & were involved in the Gloucester Project as well as campaigning against mining in the area.

So with age comes decisions & they have now retired from the commercial growing of vegetables and are focusing on developing their nursery & downsizing their property. 

They have a 3 year plan changing the property to meet their current and future ‘ageing needs’.

They are using permaculture design and again showing how versatile permaculture is and how it can be used to meet changing needs.

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Living Soils & Beneficial Microbes

Lee Fieldhouse - Island Biologicals Biocast+

Lee and his his partner Kirsty own & operate 'Island Biologicals' on the Mid North Coast, where their aim is to utilise the magic of worms to create products which maximise the health and vigour of soils and plants for all!

Lee's philosophy is that 'Nature Knows Best' & 'Life Creates Life', which suits him perfectly for the passion he has for regenerative systems that enhance not only the plants, but also animals, landscapes, people, communities and businesses.

Lee's in depth knowledge encompasses the promotion of healthy soils specialising in natural bio-stimulants that are packed with living microbes, enzymes, hormones & fulvic acid.

Lee also is a long standing permaculturist with a PDC under his belt.



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Hands On Homesteading

Nici Cooper - Simply Homesteading @ Limestone Farm

Nici is our resident farmhouse wholefood cook & recipe conjurer with a focus on catering & coaching those of us with allergies, intolerances & seeking a life of regenerative wellness. Nici holds an Advanced Certificate of ‘Nutrition & Health’, specialising in Infant, Childhood & Adolescent Nutrition and is currently studying ‘Australian Native Herbalism’.

She can be usually found in the Limestone Farm kitchen getting her Homesteading on with fermenting, pickling, preserving, infusing, bottling & baking, utilising our 'beyond organic' farm fresh produce.

Nici alongside Brett also undertakes the farm’s holistic animal wellbeing and husbandry with our daughter Bronte, caring for and breeding a variety of ducks, chickens, quail, turkeys & goats.






Permaculture Homestead & Farm - Field Day

Rick Barker - Permaculture Specialist

Richard Barker is a permaculture, environmental and societal sustainability advocate who supports research, education and design in sustaining practices and management.

A remediation advocate of 30 years’ experience, he combines opportunity with multiple solutions, developing all natural environmental and societal synergy, stabilisation and enhancement solutions through technically astute practical processes successfully implemented across the globe.

He is the founder of Tilligerry Permaculture Research and Education Farms, as demonstrations of the shared success model.

As a Polyculture Permaculture and Societal practitioner Rick Barker brings together approaches and experience from Australia and around the world that when applied, have solutions for everyday living.

A colleague of Bill Mollison, Rick continues to design and share learning's wherever invited locally and internationally through positive creative activity.

A blending of traditional cultural awareness with contemporary advancements in sustainable living, utilising conscious functional design are growth attributes.

Tilligerry Permaculture Research & Education is example focused, showing simple solutions to inspire, empower and improve.


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Empowered Off Grid

Garry Williams - Empowered Offgrid

Garry Williams started his journey into Permaculture and Renewable Energy back in 1991, starting a business and developing a sustainable property, building with hardwood & poured earth & living on off-grid power.

He spent the 1990s educating himself and others on Permaculture at Djanbung Gardens with Robyn Francis, as well as running workshops on the Mid North Coast focusing on alternative building and energy systems.

He spent the 2000s involved in his local community of Wootton NSW, establishing the 'Wootton Community Network', a community run café, coordinated sustainability fairs, workshops and influenced community development in the region for over a decade.

All the while running a business installing Off-grid Solar Systems and electrical contracting as his livelihood.

Garry has 31 years of experience and is a veteran in the industry, with over 200 Off-grid systems installed, as well as 'Hybrid', 'Solar Pumping' and 'Grid Connect' systems.

Having lived Off-grid for 23 years in Wootton, and living currently in Morpeth mostly Off-grid, his experience and knowledge is not from a textbook but from practical application and this has been gained by experimenting with the emerging technologies as they arrived on the market.