Soil
The best Australian macadamias come from healthy trees that are nourished by healthy soil. Tallowood Grove is fortunate to sit on the rich volcanic soils of Mount Yarriabini. But we’re not in the business of harvesting from the land without giving back, it doesn't make for a sustainable business nor does it respect the needs of the wider ecological web. Tallowood Grove is managed with a philosophy of sustainability - if we care for the land, the land will care for us. One of our first operating principles is to preserve the rich endemic topsoil, by preventing erosion, using shade tolerant grass cover under the canopy, avoiding machinery use when the ground is wet, using light machinery and maintaining vegetation of steep gullies. To help protect endemic soil and build new topsoil, every year we compost fresh macadamia nut husks and spread them under the trees as a rich source of carbon. Annual prunings are also mulched and spread under the trees. In recent years we have started incorporating biochar (charcoal) into the topsoil. Biochar fixes carbon into the soil for thousands of years and the porous structure provides the perfect home for soil biology (microbes). Combined with its natural water holding capacity biochar can enhance the fertility of soils for thousands of years.
Water
Williamson’s Creek (an upper tributary to the Nambucca River) courses through the property. While the farm has an extraction licence, the trees have rarely been irrigated since planting began in 1988 because macadamias are indigenous to this region of Australian and are suitable for growing with minimal inputs such as irrigation. To further protect the local waterways, the riparian zone along the creek is maintained with thick natural vegetation and gullies across the property are maintained with grass cover which serves to protect against erosion.
Environment & Crop protection
At the farm we wanted to embrace more environmentally friendly and healthy practices, such as moving away from blanket spraying at the first sign of a pest. We also use a system which refrains from harming the beneficial insect world. For us, it’s all about awareness of natural biosystems and allowing them to work for us instead of continually disrupting them with inappropriate actions.
We have abundant goannas, snakes and pythons who help the owls and birds of prey to control any rats or mice. We have introduced the Trichogramma wasp that controls the Macadamia nut borer. Possums and sugar gliders are out and about at night feeding on nocturnal insects. We have hives of native bees who help pollinate our macadamia and virgin forest trees.
Sustainability
Our farm’s commitment to sustainability is holistic, starting with the soil, our management of water, how we use machines on the land, our approach to protecting our crop from damage, our choice of business partners right up to powering our farm and factory with solar energy.