The last piece of maintaining healthy olive trees is regular inspection of your olive trees. It’s essential to catch any infestation as early as possible to prevent the spread of disease or pests. If you are managing an orchard, determine a regular inspection schedule, walking various rows and blocks of trees to inspect leaves, fruit, branches and trunks for any problems. Keep a log of findings and observations so that you know a timeframe for when a pest arrives in your orchard. Then you will know whether or not your treatment is effective in the timeframe set out by instructions.