Native plants are not too delicate for heavy pruning
In short: Many gardeners hesitate to prune Australian natives, fearing they are too sensitive to human intervention. However, these plants are evolutionarily primed for it. In the wild, they are constantly reshaped by weather and wildlife, meaning they possess a natural resilience that allows them to thrive under a careful gardener's shears.
While exotic garden plants have a long history of human cultivation, native species often lack that specific pedigree. This can lead to the misconception that they are fragile. In reality, native plants are adapted to survive significant environmental stressors. Because they are frequently 'pruned' by animals and weather in their natural habitats, they are well-equipped to respond to intentional maintenance with vigorous new growth.
Techniques vary depending on the desired outcome. For a bushier appearance in species like Grevillea or Westringia, gardeners can use tip pruning. By removing just a few centimetres from each branch, the plant responds by producing at least two new shoots per tip. This method is particularly effective during autumn, specifically until the end of April. For top-heavy plants, more aggressive pruning—removing 30-40cm from the top—can prevent branches from breaking under their own weight.
For plants that have become straggly or unkempt, a drastic approach is often necessary. Many natives have evolved to regrow even after being completely removed by fire or animal attacks. Cutting back to the ground or by half is a viable way to rejuvenate these species, provided the cut is made at a point where new shoots are present. This applies to Myrtaceous plants like small Eucalyptus and Bottlebrushes, as well as Rutaceous plants like Correas.
Clumping natives, such as Poas or Lomandras, require a different maintenance style. These often accumulate dead thatch by the end of summer. To achieve optimal results, remove necrotic material by hand and trim the full mass down to a mere few centimetres above soil level. In a similar fashion, natives that form clumps and produce flowers, such as Kangaroo Paw, require trimming the blooms at their roots prior to reducing the whole mass.
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