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Gully's colourful slopes vital for future protection

Monday 24 May 2021

It looks like green snow has fallen in Pine Gully at Kingston Park.

But the gully’s colourful slopes are thanks to an innovative organic product that will not only control soil erosion, but will eventually add new native plants back into the nature reserve.

The dramatic landscaping works that have been undertaken at Pine Gully in recent weeks began with the extensive removal of many introduced trees species and weeds.

Stormwater works will soon take place all the way along the gully’s base to help manage the vast amount of water that gushes through the area after a downpour. The stormwater works will prevent rubbish and silt from washing out to sea.

But before that work can happen, the soil on the slopes needs to be stabilised, which is where this turquoise green product comes into play.

Made from wood fibres and plant polymers, the product, which is sprayed onto the soil, sticks to it and holds it in place – but it’s still water permeable.

It’s also mixed with native grass seeds and some native shrub seeds, so over time, as the product biodegrades, the seeds will germinate. The slopes will be naturally held together with vegetation and the turquoise green colour will disappear.

The Pine Gully landscaping work is just one element of an overall strategy to future-proof Holdfast Bay’s gullies, which include Gilbertson Gully at Seacliff Park and Barton Gully at Kingston Park.

The ways in which all three gullies will be protected are detailed in the Draft Gullies Masterplan, which has recently been out for community consultation.

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