Trees
The City's Public Works Department maintains 7,500 City trees. Trees are trimmed to enhance public safety, promote tree health, and improve aesthetics and visibility. Seasonal tree trimming occurs from mid-September through March to avoid conflict with bird nesting season.
City of Laguna Niguel Recognized as a Tree City USA
In March 2025, the Arbor Day Foundation officially recognized the City of Laguna Niguel as a “Tree City USA”. City staff will continually monitor the City’s performance against the Arbor Day Foundation’s standards to ensure the City of Laguna Niguel remains a “Tree City USA”.
Tree Pests
Eucalyptus Tortoise Beetles
The City has received reports of eucalyptus tortoise beetles affecting City trees; specifically the Dotted Paropsine Leaf Beetle. While native to Austrailia, these invasive beetles have infested many eucalyptus trees throughout Southern California. The beetles eat and nest in the leaves of the tree. Severe infestiations can cause defoliation and possible death of the tree.
Additional Information and Resources on Eucalyptus Tortoise Beetles
Another Eucalyptus Pest: The Dotted Paropsine Leaf Beetle
Dotted Paropsine Leaf Beetle Threatens California’s Eucalyptus