Laurel wilt is a disease spread by the non-native red bay ambrosia beetle that affects trees in the laurel family. The disease, which originated from infested wood packing material, has killed native ...

Q: I think our avocado tree has black streak disease and I need to know how bad it is and what to do. Is there anyone you would recommend to come and take a good look? I am in Oakland. A: Avocado ...