Goodyear, Arizona is a little outside of Phoenix. Growing grass in this arid, hot climate can be daunting, even in the cooler fall, especially for those new to the area or novice gardeners. The key is to choose a grass that works for Arizona's weather and soil. After that, focus on seeding a lawn instead of sodding, because it is less expensive, and to prepare the soil correctly and protect the grass seed after you plant it.
Measure your landscape's square footage to determine how much rye grass seed you will need for the planting area. Rye grass seed is ideal for fall planting in Arizona because it is disease-resistant, thrives in the cooler winter months and does not have to be replanted each year. It will go dormant in the hotter months, and you can then re-seed with Bermuda grass.
Till the soil 3 inches deep to loosen up the dirt in the planting area. Discard any objects larger then 3 inches such as rocks, roots and weeds. Tilling is especially important in Arizona because it will improve air circulation and water absorption in the native sandy and rocky soil.
Seed the area in mid-October. The sun will be strong enough for the seeds to germinate, but not so hot that it will bake the seeds. Distribute the seed evenly with your hands and thoroughly spread it over your yard, starting on one end of the yard and layering the seed horizontally, then repeat the process vertically from the other end of the yard. Pay special attention to edges and corners. Rake the soil lightly to integrate the seed into the soil.
Soak the planting area with a light shower of water for about 15 minutes. This will ensure the water really soaks through the top few inches of soil.
Layer 2 inches of straw over the seed after watering. The straw will help protect the seed from warmer days, and will also stop foraging birds or strong winds. Once the grass is about 2 inches tall, you can remove the straw.
Water the lawn once in the morning and a second time in the late afternoon until the rye seed sprouts, about three weeks usually. When the grass sprouts, reduce watering to once every other day in the morning. Until the temperatures drop to the low 70s degrees F, it is important to keep the grass hydrated because the Arizona sun can dehydrate the young grass blades. Once winter comes around, reduce watering to twice per week.