This is my first spring to try prevention of fireblight on my apple trees with Serenade. I'm hoping to grow decent organic apples through bagging and the use of Serenade. I'm new to this method and all thought and opinions are welcome. I live near Birmingham Al and hope that I have the correct zone 7 listed. I'ts early but no signs of blight have been noticed. In addition CAR has not been seen. Thanks in advance for your comments.