Lemon Trees
Q.

How can I treat my small lemon tree that has what appears to be a fungus on the leaves?

Zone Central coastal Florida Zone 9 B | cdawn14 added on November 11, 2018 | Answered

Many of the leaves have a grey splatter on the top or underside and soon fall off.

A.
A.Answers to this queston: Add Answer
drtreelove
Certified GKH Gardening Expert
Answered on November 12, 2018

What you describe may be "greasy spot disease".
http://edis.ifas.ufl.edu/hs263

Photos would help.

Or go through this list of possible citrus diseases from U Florida an see if you can determine a more likely disease. http://edis.ifas.ufl.edu/topic_citrus_pests_diseases

Also look under citrus pest management. Mealybugs are common, but they are usually white fussy, sticky masses, not grey.

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