Do olive trees have a lot of problems with pests?
Compared to most fruit trees, olives are fairly easy to manage where pests are concerned. In California and the Mediterranean, the olive fruit fly is the most economically important insect pest. Foliar fungal disease can be an issue in some areas, and olive knot is a problem in other locations. All of these problems can be managed effectively with a good integrated pest management program. There are products available for California’s major olive pests that are approved for certified organic production. The best source of information on pest management for California olive growers is the University of California Statewide Integrated Pest Management website. Their pest management guidelines for olives are frequently updated to address new pests and products. http://www.ipm.ucdavis.edu/PMG/selectnewpest.olives.