Council has advised that testing, with assistance from consultants associated with the Botanic Garden, of the ailing Norfolk Pines has now been completed. They have been able to rule out poisoning & believe the deterioration has been caused by a waterborne related disease. Soil testing of the broader area is still being undertaken to better understand the existing soil composition and its role in the ongoing health of the trees. Council will apply the appropriate soil conditioning to improve the health of the trees. The shorter Norfolk pine in deteriorating condition with dying branches will be trimmed and the surrounding soil improved to give it an opportunity to recover.