Q.pittosporum limbs dying
I have some large pittosporum (about 5 ft. across) that are developing some dead patches. It seems that whole limbs are dying while areas next to them are unaffected. Any ideas? I have about 10 of these in my landscape, and about half of them are having this problem.
How is the soil (i.e. drainage, moisture level, etc.)? Have you watered frequently or had a lot of rain? Pittosporum are well known for having issues with root rots, most commonly attributed to Phytophthora. Here is more information: https://www.gardeningknowhow.com/plant-problems/disease/what-is-phytophthora.htm