Recent light brown apple moth (LBAM) detections have prompted officials to expand quarantine areas in Sonoma and Santa Clara counties. A new quarantine of approximately 18 square miles is now established in the Sebastopol area of Sonoma County, while an existing quarantine in the Milpitas area of Santa Clara County has been increased by approximately 64 square miles.

At present, approximately 2,414 square miles are now under quarantine within California. State and federal quarantine regulations prohibit the movement of all nursery stock, cut flowers, host fruits, vegetables and plant parts within or from the quarantined area unless they are certified as free from the pest by an agricultural official. Additionally, federal regulations apply to host commodities from the entire county if the commodities are moving interstate.

LBAM is native to Australia and is now present in New Zealand, the United Kingdom, Hawaii and California. Hosts include more than 250 plant species.