Leaf discolouration and curling on a citrus tree. What is it?
This is either an orange or a lemon tree. I can't recall which. It was planted about 6 months ago. It had been growing quite nicely and is actually flowering. But recently (in our Southern Hemisphere late autumn) this curling discolouration has occurred. It just occurs in a segment of the leaf and goes down to the central vein. The particular leaf I have photographed is viewed from front and back. You may also be able to see a slightly filmy appearance on the other side of the central vein. What is it? Thank you.
This is the same leaf from the back.
Some flower buds and evidence of curling.
The leaf from the front.
This is the citrus tree.