What's wrong with this Mexican fan palm?
I have a Mexican fan palm that has been planted in my yard for just under five years. It has thrived, but at the moment is having a "bad hair day," as shown in the attached pictures. I've researched possible causes and magnesium deficiency is the only possibility I've found. I recently treated it with a palm fertilizer with 10% magnesium and some Superthrive, but it hasn't had time to make any difference yet. See the attached pictures -- does anyone have any other ideas?