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Recommendation to request City Manager, or his designee, work with Public Works Department and return to Council with a To/From/For memorandum and a receive and file presentation within 90 days;
In addition, request City Manager, or his designee to provide recommendations to improve the current policies/processes surrounding tree infestations; a cost estimate for the removal and replanting of all affected magnolia trees within the City's boundaries; and a cost estimate for water blasting all affected sidewalks to remove the Tulip Tree Scale secretions.
DISCUSSION
In late 2017, constituents throughout the Seventh District began reporting magnolia trees on their parkways had been secreting large amounts of sap. After further investigation, the Public Works Department determined that the secretion was due to an infestation by a pest insect called Tulip Tree Scale. As many of the infected trees were originally found in the Wrigley neighborhood, Vice Mayor Dee Andrews and Councilmember Roberto Uranga coordinated with the Public Works Department and the City Arborist to determine a means of treatment while preserving our City's urban forest.
Throughout the month of June 2018, the City contracted with a company to treat a sample of the infected magnolia trees, by applying a specialized insecticide to the tree and root system of 20 infected tree sites. The Public Works Department and City Arborist have continued to treat and monitor the status of tree treatment and reports of new Tulip Tree Scale cases. In October of 2018, our office received a list of the trees infected in the Seventh District, which identified that 142 magnolia trees were infected.
Starting in May 2019, our office received an increase in requests regarding Tulip Tree Scale in magnolia trees, many of which had undergone previous treatment efforts. My office staff has also received reports that the· scale has spread into other districts, including Districts 1,2,3 and 8.
It is now clear that t...
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