Read on the Glen Park Association blog about the recent identification of a destructive insect infecting lemon trees in SF, and the quarantine. https://www.glenparkassociation.org/got-a-lemon-tree-its-quarantined-now-yellow-dragon-disease-has-arrived-in-san-francisco/
An innocuous insect that carries a devastating disease which has destroyed citrus groves in Africa and South America has arrived in San Francisco. The Asian citrus psyllid has been found in the Marina district and the California Department of Food and Agriculture is making anyone with citrus trees on their property to avoid moving fruit and plants.