I had a new lawn and sprinkler system professionally installed in 1999.
Every year since 2002 there have been numerous dead spots everywhere. It
looks like it will be the same this year. I have always had a professional
landscaper take care of the fertilizer/weed killer/grub control
applications. (I usually apply starter fert. between his applications-this
was a tip from the lawn installation company). He has been unable to
explain why my grass dies.



The water from my point well has a lot of iron in it. The grass is Kentucky
Blue grass and was originally hydroseeded. My neighbor next door does not
have my lawns problem. His lawn/sprinklers were professionally installed in
'99 too, by a different company. His grass was from seed and his water is
city water; no iron.



Pictures can be seen at: http://www.outsourceparts.com/crappylawn (click on
the thumbnails for larger view)



-Is the iron a problem?

-Am I stressing the grass with the starter fertilizer?

-Good loam was added over my original lawn- I assume that is deep enough.

-I mow at 2.75" (1" lower for the last mowing)



What do you think the problem is?