Learn more about TCD in your state





National and State Maps of TCD

National and State Maps

California Information

The Plant Pest Diagnostics Center confirmed the presence of TCD in California in August, 2009.


No quarantine has yet been enacted in California. Be sure to check out the additional resources section to see how you can help limit the spread of TCD.

Reporting TCD

Please report any possible detections to your agricultural commissioner's office or to your local University of California Cooperative Extension office.

Additional Resources

Latest News

Michigan Seeks Comments on Proposed Revision to TCD Quarantine - Sep. 06, 2017

Presentations from June 2017 meeting now online - Aug. 08, 2017

2017 survey guidelines now available - Apr. 25, 2017

TCD Research & Management Operational Meeting June 13-15, 2017 - Apr. 21, 2017

Read More TCD News...