You'll get better advice if you provide a little more info -- although the
yellowing can be due to overwatering, since your back yard is OK, that's
probably not it. The best way to get an answer is to take a sample to your
local extension service and Master Gardener program --

1. -- Where are you?
2. -- Which variety did you plant -- Bitter Blue? Floratam?
3. -- Most St. Augustine grass does not do well in shade, so that in your
shady back yard may not do well in the long term.
4. -- If you're sticking to a good watering schedule -- deep enough and
frequent enough, the sod in your sunny areas should be doing well, even in
the summer.
5. -- If there are areas that got skipped at topsoil time, or if your yard
has other issues (e.g., buried construction debris -- not uncommon in new
developments -- or a septic tank close to the surface, the sod in that area
may not do well.

Your St. Augustine grass should be well established by now, and healthy.
the light afternoon watering is not doing it any good and could lead to
fungal problems. Just make sure it's deep watered without overdoing it.
Sod that I laid about 8 weeks ago has already established itself, and yours
should have, also.

Good luck and regards --

"Lil' Dave" wrote in message
link.net...
Moved into a home in a rural area. No lawn.

Went to a local equipment rental facility that also sold sod grass by the
pallet. Looked at his list of species and the traits of some 5 different
species of St. Augustine. Picked out the type indicating high tolerance
to
heat and drought. They brought out a couple of truckloads of topsoil to
put
around the house first. Then I laid the sod. This was in April.

Have kept the grass irrigated, and did some light watering in the late
evening to supplement when appeared the heat was drying the grass out.

The back of the house is what I expected due to the prevailing shaded area
near the house. Lush and green. Some other areas are having difficulty
maintaining their green-ness. Guess due to the heat, and when the rain is
less prevalent.

Have noticed in the sunny areas, there are some single sods if you will,
that are deep green and seem unaffected by the heat. These are few, the
remaining seem to dry up and start turning yellow.

Did the sod contractor (not the reseller) mix up the grass species in the
order?