How do you control citrus tree canker? What cause it? My leaves have blisters and leaf curl. What's cause it?
My leaves have blisters and leaf curl. What's cause it?
Answers: Citrus canker is caused by a bacteria. There is no cure. An infected tree should be removed and the trunk treated to prevent root sprouts (which would also be infected).
However, within are two other common diseases, Anthracnose and Scab which can closely resemble Canker. These are fungal diseases, which , while unsightly, are not serious problems.
Citrus leaf miners can also seriously devastate the new growth of citrus trees this time of year, resulting in the appearance you describe.
Contact your local agricultural official. They can help you diagnose which problems you have, and communicate you how to deal with them.
It is spread by airborne spores. You MUST contact your State Department of Conservation right away. They have a website. They will send someone in the hour to ID the disease. The only cure is to remove and destroy the tree. If you really hold this disease on your tree you are endangering a 3 block area. It spreads approaching wildfire. Citrus tree populatons in whole counties enjoy been wiped out surrounded by weeks in Florida. Thats how potent it is!