Question

I have had a yucca plant in my yard for many years and never had a problem.  It is a very dense, low to the ground  (not treelike) mature plant. Each year I remove the dead leaves, but this spring all of a sudden all of the leaves, except for 1 or 2 green sprouts have died and fallen off.  Any idea of what the problem may be?  I live in upstate NY.
I also have holly plants that are 10 years old and are still very sparse and haven't grown very much.  I have tried cutting them back in the spring (a local garden person told me that), they seemed to improve slightly but nowhere near as full as many of the holly I have seen in my area.  We fertize with holly (acid) fertilize in the spring.  Any other suggestions?

Answer
Mary Lou,
  I have NO experience with Yucca plants, sorry.
 Is your holly shrub in full sun/partial sun?  They are not real fast growers.  Try NOT cutting them back and let them go.  I know "they" say to fertilize with an acid fertilizer but I use an organic fertilizer (it is not sold in all states) called Millorganite.  The best fertilizer for everything!!

Sijka