How to treat a fungal disease of my lemon tree/soil. I'm in Phoenix Arizona. First picture is orange tree that I was told is infected. It has no fruit this year at all, with lots of dead limbs. Old leaves are yellow but lower new growth is green. The second and third pictures are of the lemon tree. I was told by an arborist that it is infected and needs to be treated. What is the best way to treat it? Thank you. Mara Maretti
Fungal Disease of Lemon Tree and Soil
Certified GKH Gardening Expert
If you can, contact the arborist and ask for the name of the disease the trees are infected with. The best treatment will depend on what disease it is.
Armillaria root rot and Phytophthora root rot are some of the fungal and fungal-like diseases of orange trees. See the following page for images and links to more information about treating these diseases:
Also see this page for more fungal diseases of citrus: