Found this Yellow oleander at the local nursery, it had been cut back several times before.
I plan on cutting it back more, perhaps next spring to improve the ramifications on the secondary branches.
I need to wire this plant and re0position it to hide the large pruning scar. But that will be done next summer.
When is the latest I can prune this tree to still have blooms in the spring and summer? I have never seen an oleander with yellow flowers; they are quite fragrant as well.