|In February 2011 when this photo was taken, these trees had no HWA.|
I looked at those trees today and they are covered with HWA and with EHS. The controls worked for 3 years, which wasn't bad.
It seems to me like there is a lot of HWA this spring -- not just on these trees but everywhere. It might be because of the warm winter.
Has anyone else observed how long Safari has controlled HWA? If so, make a comment about your situation.