Linda, note what it says about heat treatment in that article I linked:
"High temperatures inactivate the bacterium in insect vectors and plants.
Leafhoppers can be freed of the organism by exposing them to a temperature of
88°F (31°C) for 10 to 12 days. Thus, when a hot spell lasts for more than two
weeks, the infectability of the vector is much reduced and symptom remission
may occur in infected plants. This explains why this disease is rare or absent
in hot areas of the world"
So I'm hoping that our hot weather will kill the disease in the bugs, at least, and keep the infection from spreading. BTW, there's a discussion of this topic going on in Cliff's echinacea cubit
http://cubits.org/echinaceas/t...
Karen
