Rancho Guejito Agricultural Operations is a 23,000-acre (36 square mile) grass-fed cattle ranch and organic farm located in northern San Diego County. It is the last intact land grant ranch of the more than 800 historic Mexican Land Grant The ranch also grows organic Haas avocados, mandarins, lemons, grapefruit, and vineyards. The organic produce grown on the ranch is sold at national retail food chains such as Whole Foods. This division of the business is not open to the public.