I too, am outside the zone, but have seen a similar thing happen with citrus canker in Florida. People were going crazy about orange trees. Lawsuits and the whole nine yards. Commercial growers licked their wounds and replanted, but the backyard tree owners went nutz.
In the end, it didn't matter because greening (a different disease) has killed off any possibility of growing citrus.
In the end, it didn't matter because greening (a different disease) has killed off any possibility of growing citrus.