When I bought my retirement home in 1998, south Tampa was awash in citrus trees. Once a year the air was laden with that wonderful smell. But Citrus Greening has decimated them. My citrus are fine BUT they are own root and my yard was inoculated with beneficial bacteria and two species of tiny wasps that feed on the psyllid insects that spread Citrus Greening in 2003. When my Dad was ill and I drove to many hospitals on the east coast of Florida, and my return trips to Tampa, I saw entire huge groves being burned. And now the disease has even reached Australia. It is truly a global disease. John

https://www.sciencedaily.com/releases/2016/04/160418092420.htm