http://www.crfg.org
If you can access this link, bookmark it. One of the tours is at Gene Lester's citrus collection. Exact date is unknown at this point, so check the link from time to time.
http://www.crfg.org/phpbb/viewtopic.php?t=162
"The Festival of Fruit - 2006, will be hosted by the Central Coast Chapter of CRFG. We will conduct tours for the first three days ( September 5,6, and 7) and more tours in the morning of Friday, September 8. The Festival of Fruit General Session will begin at 1 p.m. on Friday and continue until 5 p.m. Saturday evening, September 9th. We have a fantastic and creative committee working on the Festival and hope YOU will make plans to be in San Luis Obispo in September. More details will follow. Keep an eye on the CRFG Website and read the Fruit Gardener for updates."