Hi all,
I have a row of pittosporums that have been around for at least 20 years. One died off about a year ago, and even though I have an irrigation system to water them I figured it wasn't reaching the farthest one that died off. Plus, it turns out my neighbor's irrigation that could have been watering it had not been working for quite a long time. So, assumed it was lack of water. Ever since, I have watered the one next to it by hand at least once a week.

Now, since the rains have been nearly daily down here, I am not hand watering it. However, it is starting to die off anyway. See pics of the dying one, and the ones that are nearly next to it that seem to be doing fine so far. The one that died a year or so ago was to the right of the one dying now, just so you know where they are all lined up. The sprinkler is in the far left corner by the house, and sprinkles them from overhead, not the surface level soakers that should be there - I realize.

Any ideas? Thanks!