Question
I have just purchased an Eastern Snowball.  It is about 3 feet tall.  I have been watering it every evening.  It is planted in partial sun (no evening sun).  Now the innermost leaves are turning brown and dying.  It seems to be spreading outward to the ends of the branches.  In other words, it looks like it is slowly dying.  What should I do?

Answer
Dear rik...it is so impossible to quess what the heck an eastern snowball bush is especially here in Florida.  I am going to guess it is a viburnam sp that does not grow where I live.  Botanical names get the plant right.  I don't know where you live, which plays an important part in figuring out your problem..  With this all in mind, did you plant it too deep? Should not be deeper than it is planted in the pot.  Is it in the ground or in a container?  Here in FL we water 3 times a week for a new plant for one month and in a pot almost daily...this again depends on where you live.  here is something I found that may help you...Fungi : Powdery Mildew

Powdery Mildew is usually found on plants that do not have enough air circulation or adequate light. Problems are worse where nights are cool and days are warm and humid. The powdery white or gray fungus is usually found on the upper surface of leaves or fruit. Leaves will often turn yellow or brown, curl up, and drop off. New foliage emerges crinkled and distorted. Fruit will be dwarfed and often drops early.

Prevention and Control: Plant resistant varieties and space plants properly so they receive adequate light and air circulation. Always water from below, keeping water off the foliage. This is paramount for roses. Go easy on the nitrogen fertilizer. Apply fungicides according to label directions before problem becomes severe and follow directions exactly, not missing any required treatments. Sanitation is a must - clean up and remove all leaves, flowers, or debris in the fall and destroy.