Leaves dying

Question

The leaves and branches are dying on our wisteria. It has grown up a pine tree about 50 to 60 feet tall. Has been beautiful since we move in 4 years ago. This year the flowers did produce like before and did not last as long as before.

Answer 1

I would check the base of the plant for galls. This is the most common reason for unexpected wisteria decline. Here is an article with more information:
http://umaine.edu/ipm/ipddl/publications/5095e/