why has my viburnum been attacked in the leaves the past 4 years 9but never before that) and is dying?

Question

Viburnum was very healthy for about 10 years.  I had a whole long hedge that grew about ten feet high.  About 4 years ago some disease began attacking the leaves.  Now it is dying in different sections.  some worse than others.  i sprayed it with Seven.  THat helped for a couple of years.  But now the disease is overwhelming the whole hedge.

Answer 1

I would try this soapy mix of 1 teasp liquid soap & 1 qt water and spray it until it drips..................do this again next week...................if this does not help............you can try dormant oil in the fall....read the label to see if this plant is included in their list......wear old clothes, mask, goggles, hat and gloves, spray on a day that has no wind,,,,,keep children & pets away until this is dry....................repeat in the spring...and follow the directions of the container for next use.