Hi, I have had this healthy in-ground lemon tree for more than 6 years in our backyard. For some unknown reason, a few healthy branches suddenly started wilting (dry leaves and lemons). I cut off those branches and things were fine. However, I noticed a couple days ago that another healthy branch (I had just plucked one ripe fruit off it last week) is now drying up. Can you please help me? I have attached pictures of the tree and the affected branch as well for your review. Thanks! Shikha Attaching the pictures for the outdoor Lemon tree here. We live in the Bay Area - Campbell, California. Thanks!
Here is a citrus problem diagnosis out of UC Davis: http://ucce.ucdavis.edu/files/datastore/530-15.pdf (my reading suggests this might be fungal) This is a relatively new disease that is affecting orchards: Colletotrichum Shoot Dieback of Citrus If those don't look likely, and no one else replies, I suggest also contacting your local Master Gardeners: Advice to Grow By... Ask a Master Gardener - UC Master Gardeners of San Mateo & San Francisco Do let us know, though, if you find a solution!
