How do you actually create a system that functions, especially when the most fundamental resource – topsoil - is limited?

Across Australia, one of the most persistent challenges in mine closure is the availability and quality of topsoil. Even where topsoil exists, volumes are often insufficient, variability is high, and storage can degrade its biological and structural integrity rapidly.

The result? Rehabilitation strategies that rely on topsoil alone are increasingly constrained - and in many cases, fundamentally misaligned with the scale of the challenge. But there are solutions.

When land rehabilitation fails, the cause is rarely at the surface. Vegetation struggles to establish. Slopes erode. Water runs off instead of infiltrating. Closure criteria are missed. Carbon, forestry, or biodiversity projects underperform. And ultimately, remediation costs escalate.

In most cases, the problem can be traced back to one thing: the soil beneath our feet.

At Verterra, soil sampling is not a box-ticking exercise. It is the foundation of every successful rehabilitation, soil amelioration and land-performance outcome we deliver.

‍Across Australia, biosolids are becoming an increasingly valuable resource for improving soil health, boosting productivity and closing nutrient loops. Yet despite decades of safe use and clear state and national guidelines for usage, misconceptions still hold many landholders back from taking advantage of this opportunity.

At Verterra, we work with utilities, processors and farmers to develop safe, reliable and scientifically robust biosolids programs. Below, we break down some of the most common myths—and the real facts behind them.

‍ ‍