The 13th annual Arbor/Earth Day Celebration will be from 11 a.m. to 4 p.m. Sat., April 24 at Conejo Creek Park North, 1379 E. Janss Road, Thousand Oaks.

The festival features more than 100 organizations and businesses that promote environmental awareness or produce environmentally friendly, nontoxic products and services. The city is seeking eco-friendly exhibitors, vendors and sponsors for the event.

Arbor/Earth Day is presented free to the community by the city of Thousand Oaks and Conejo Recreation and Park District.

Vendor application and waiver forms are available at the website www.toaks.org/arbor,  or call Gay Mosser in the city clerk’s office, at (805) 449-2160 or e-mail gmosser@toaks.org.

For information about sponsor packages, call Jana Covell, Grant Brimhall/Thousand Oaks Library, at (805) 449-2660, ext. 258, or email jcovell@tolibrary.org.