[Arid_gardener] Question from Home-Hort WWW page

[apetzel at rpryan.com]

Annette Petzel
85009
apetzel at rpryan.com

I have 2 fifty year old magnolia trees--huge, individual blossoms.  One is lush and probably 30 foot tall and very full--similar to an avocado tree.  The other is stunted--it's tall, but has never done well, had never bloomed, lots of dead wood.  When I bought the house 4 years ago, I had the arborist come and do a systemic treatment and deep root fertilization 2 years in a row.  Looked wonderful and for first time ever, produced many blossoms in the past 2 years.  This year, leaves are all wilty and edged with brown--just like it was when I bought the house.  Lots of falling leaves but has prolific blossom buds.  Could this have verticillium wilt?  If so, how can I be sure and what can I do?