yournamehere

Well, speaking as a 22-year (former) resident of Arizona - what are you doing with grass in your backyard? Save the water for people to drink - you live in the desert. Bermuda grass is very thirsty, especially with the heat and low humidity in Arizona. Let it die and put in some decomposed granite. Go buy the book "Plant for Dry Climates" - there's an amazing amount of low water use plants that thrive in the desert - many of them even tropical-looking.

However, if you insist on being irresponsible and having turf in your backyard, have some patience - bermuda is a very fast-growing and fast-spreading turf grass. One season of decent watering and fertilizing will bring it back - then overseed around Halloween with some ryegrass or fescue (general rule for overseeding - wait until the "low" daily temperature is below 60 degrees for two weeks straight). Also, give it some sulphur - the pH in Phoenix is horrendously high, and it will make the soil more acidic, which will allow plants to absorb nutrients. If there's no automatic sprinkler system in your yard - install one - you'll thank yourself later. It makes it easier for you to water, and, more importantly - it's more efficient than using a hose.

But - again - the desert is no place for turf, unless you're irrigating with effluent. At least compromise and devote a certain small area to turf, with decomposed granite areas and pathways - you can make it look real nice - better than wall-to-wall grass.

If you're dead set on growing grass and have any more questions - ask. This is finally an area I know something about.

Edited later to add: One more thing - are there shade trees in your yard? I ask because bermuda doesn't like shade.

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