Jun 26, 2025 | Agriculture, Cropping, Farming
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Australian agriculture is facing mounting pressure from climate change, soil erosion, and rising input prices. Sustainable agricultural practices are more crucial than ever before. Among the different ways, one simple yet effective approach is companion cropping.
But what is companion cropping, and how does it help Australian agriculture?
Let’s deconstruct in simple terms.
Companion cropping, or companion planting, refers to the method of planting two or more crops together in the same field for the benefit of one another. These crops complement each other in various ways, for example, by enhancing soil quality, deterring pests, or increasing yields.
Unlike monoculture, in which a single crop is grown over vast areas, companion cropping replicates nature’s diversity. It creates a miniature ecosystem where plants help each other to grow.
The agricultural climate of Australia presents specific challenges:
Companion cropping addresses these problems through natural processes rather than chemicals or high inputs. It is similar to regenerative agriculture and fits closely with sustainability objectives set by Australian government agencies, such as the Department of Agriculture, Fisheries and Forestry (DAFF) and state-level agricultural services.
These are some instances of companion crops already utilised throughout Australian farms:
Where: WA, SA, NSW
Why: Lupins nitrogen-fix in the soil, which is good for wheat. It also lessens diseases in continuous wheat systems.
Where: Southern grain regions
Why: Legumes fix nitrogen, decrease fertiliser requirements, and enhance canola growth. They also help in weed suppression.
Where: QLD and northern NSW
Why: Cowpeas give ground cover, increase soil structure, and suppress weeds.
Where: VIC, TAS, urban farms
Why: Basil keeps insects away that damage tomatoes. It can also enhance the taste of tomatoes.
Pest and Disease Control (Naturally!): Some vegetables ward off pests or attract good insects. For instance:
This decreases the demand for chemical sprays, which is more beneficial for farmers, the environment, and consumers.
Better Soil Health: Legumes (such as peas, beans, and lupins) are nitrogen-fixers naturally. They pull nitrogen from the atmosphere and fix it in the soil, cutting the requirement for synthetic fertilisers.
More Yield at Lower Cost: With companion cropping, plant health increases and competition for resources decreases. Hence, yields can increase, particularly in degraded or poor soils.
Weed Suppression: Rye or clover cover crops grow quickly, suppressing weeds, reducing herbicide usage and helping soil retain moisture.
Climate Resilience: Mixed cropping systems are more resilient when there is extreme weather. An unexpected pest epidemic or drought is less likely to spoil several species simultaneously.
Australia’s National Soil Strategy and Future Drought Fund both encourage regenerative practices such as companion cropping. The practice also reinforces important pillars of Australia’s Sustainable Agriculture agenda:
The GRDC (Grains Research and Development Corporation), CSIRO and NSW Department of Primary Industries (DPI) indicate that integrated cropping systems (including companion cropping) can:
Since companion cropping isn’t one-size-fits-all, it requires:
There are tools, such as FarmHub by the National Farmers’ Federation and local Landcare groups that offer support and resources for the proper implementation of companion cropping.
Companion cropping is not like any other gardening trick. It is a smart, science-backed method that helps Australian farmers build resilient, profitable, and sustainable farms.
With the rise in global pressures and changes in local conditions, smart farming is the key. Companion cropping is a solution that is environment-friendly and economically sound.
From growing broadacre grains to vegetables, companion cropping is a solution worth exploring. For more information on companion farming, contact us at KG2 Australia today!
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