The Lavender Fields in Valley Center, CA The lush acres of The Lavender Fields in Valley Center offer a unique treasure to the San Diego North region. In May and June, The Lavender Fields are open weekends and select weekdays from 10am to 5pm. Click here for more information. Wish you were here, San Diego North Convention & Visitors Bureau If you wish to change your e-mail address, preferences or unsubscribe, please click here.