jennifer london has the story from redland. >> i can see the tree has a broken branch. >> citrus farming runs through bob's blood, passed down from his father, grandfather, and great grandfather. >> we have been farming oranges and citrus in this area since the 1900s. >> the citrus groves have survived snaps, cold snaps. >> it is it the asian citrus psyllid. it's fatal. we'll lose all the trees. it's like losing someone in the family or a major tragedy. >> the californian department of the food and agriculture called it the most devastating disease in the world. one that science has been unable to combat. in the u.s. the pest made its way into florida, georgia, south alabama. arizona, hawaii and california. the asserted disease hit six states. it threatened the citrus industry. >> bob night and others are interesting to get treeative and adapt. like making the switch from selling citrus to growing vegetables. >> when you are a fourth generation citrus karmer, who will buy your vegetables. >> the second largest school district pledged to by all the vegetables that dob night and others cou