More than 70 food enthusiasts will speak at the National Heirloom Exposition, opening today at the Sonoma County Fairgrounds.

Attendees can also watch screenings of new food-related films as well as take home produce, plants and seeds, garden and nursery supplies from more than 300 participating vendors.

The event runs through Thursday.

Tickets are $10 or $25 for all three days. Kids under 17 enter free.

For more information,