Please join us on June 5 - 9, 2023 in Rohnert Park (Sonoma County), CA for the 68th Western International Forest Disease Work Conference (WIFDWC)! The following email includes previously shared information in addition to the newly updated registration website and highlighted reminders about deadlines (the first deadline is April 6th for the hotel)! As always, you can also visit for more information.


Register online by April 17th at:

$325 regular registration*

$125 student registration*

$125 retiree registration*

$40 guest on field trip (transportation and food on Wednesday)

Note: Registration will be open until May 15th, but will include a late fee of $75 after April 17th.

* Includes Wednesday’s field trip (transportation and food). As per usual, this does not include Monday’s optional field trip, committee meeting breakfasts or lunches, dinners on your own, or the banquet meal. These additional costs will be charged when registering. 


Sonoma County encompasses both sea (the wet coastal strip) and sun (the drier, hotter, higher Mayacamas Mountains). The county features a wide variety of vegetation types, from coastal pines, redwoods, and Douglas-fir-tanoak forests to the oak woodlands and grasslands of the interior–and of course this entails a corresponding array of both native and non-native forest pathogens, including Phytophthora ramorum (cause of sudden oak death), P. cinnamomi, Fusarium circinatum (the cause of pine pitch canker), Viscum album (European mistletoe), and many, many more. 



Expiration Date