Static Aerobic Composting
What Is the Johnson-Su Method?
Johnson-Su composting uses a bioreactor to keep organic material moist, aerated and undisturbed while beneficial microbes and fungi develop over time.
Air channels built into the reactor keep the compost aerobic without regular turning, helping fungal networks develop without repeated disturbance.
The finished compost is often used in small amounts as a biological inoculant, helping introduce beneficial organisms into gardens, market gardens and farms.
Why Try Johnson-Su?
Leaves the compost undisturbed so fungal life has time to establish.
No regular turning means less heavy work once the bioreactor is filled.
Creates compost aimed at restoring the microbes that help soil function.
Useful for gardens, smallholdings, community projects, market gardens and farms.
Soil Benefits
Johnson-Su for Regenerative Growing
Johnson-Su compost is usually treated less like bulk fertiliser and more like a starter culture for the living soil food web.
Helps bring beneficial bacteria, fungi, protozoa and other soil organisms back into depleted growing systems.
The method values low disturbance, careful moisture and steady aerobic conditions, echoing the principles of healthy soil management.
Best used alongside cover crops, mulch, living roots, diverse planting and reduced cultivation.
Bioreactor Basics
Getting Started
A Johnson-Su bioreactor needs a breathable structure, internal air channels, a diverse mix of organic material, steady moisture and patience while the compost matures.
Further Reading