Oleander Disease / Insect Issues
I am having an issue with several Oleander plants that have been in the ground just about 12 months. I have inspected the plants closely and do not feel it is an insect issue.
There are two major symptoms and I am not totally convinced they are connected.
One is that the leaves start turning brown at the tip and this slowly moves towards the stem. This starts with the lowest leaf on a stem and moves upward.
The second is that the leaves start to yellow and then curl, length wise.
Eventually, in both cases the leaves and stems appear to be dying.