Thanks Cindy, I will tell her. I already told her to pull the mulch back from the leaves/crown a bit. I was wondering about location on both of these & here's what she said:
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Could be a soil issue because we are heavy in clay but these are very far apart, one in the side yard. The other one of the same kind is about 3feet away and fine. They have both been in the same places since I planted them.
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I know they have been planted about 5 years, 4 years minimum.
I'm also going to tell her to use some alfalfa pellets which will also help improve the clay as well as gypsum also to improve the clay.