Ash Trees Do Not Normally Need Applied Iron

Q. Should I give my ash trees the same iron treatment as
fruit trees?
A. Ash trees seldom need iron so unless you are seeing some
yellow leaves with green veins in the spring and summer months I would save
your money. They will do better with organic wood mulches on the surface.

            But they
seem to do all right with rock mulch but most of the ashes would prefer the
soil to have more organic material in it. Arizona ash seems to be perhaps an
exception. Fertilize them once in late January or early February with a tree
and shrub fertilizer.

Ash tree used as a street tree in North Las Vegas