I live in Santa Cruz CA and have a Magnolia tree we planted in early Spring of '09. It has been beautiful, healthy & green. All of a sudden the leaves are turning yellow and some are drying up and falling off (July) & we are in the midst of one of the mildest Summers in ages.
Any ideas out there for why this is happening. We DEEP water once a week, the area where the tree is located is Southern facing (lots of sun), raised (good drainage) with a healthy layer of mulch & lots of friends (Lavender, rosemary, etc.).
Thanks for the help & best wishes to everyone!