Q.Lemon tree
My lemon tree and my ornamental orange tree both have bumpy leaves – like little lumps growing from inside.
What is the cause of this as I have sprayed with oleum about 4 weeks ago but it does not seem to have helped yet.
Thank you
Kind regards
Jenny

BushDoctor
Certified GKH Gardening Expert
Certified GKH Gardening Expert
Answered on December 22, 2017
This sounds like what is called Citrus Canker. A very bad bacterial infection. This article will help you to identify the problem, and offer ways to solve the issue: https://www.gardeningknowhow.com/edible/fruits/lemons/common-lemon-tree-diseases.htm
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