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This document summarizes a trial comparing two urban tree planting methods in Caloundra, Queensland, Australia from 2012. It compares Elaeocarpus Obovatus trees planted in structural soil in a sidewalk to those planted in soil cells in the roadside. After four years, the trees planted in soil cells were larger, reaching a height of 7m and canopy width of 6m, whereas the trees in structural soil were only 4m tall with a 2m wide canopy. The document discusses Citygreen's vision of making sustainable green space accessible to all and harnessing water resources to make cities greener through their engineered systems that increase urban forest canopy and capture stormwater runoff.





