How to Grow Grass in Tucson, Arizona

Prepare for late spring or early summer planting in Tucson. By this time, the chances for frost in Arizona have passed and desert soil temperatures typically reach the 70 degrees Fahrenheit needed to promote healthy seed germination. Bermuda grass seeds, specifically, will germinate quickly if planted right before the start of Tucson summer temperatures.

Measure your lawn area with a tape measure and calculate the total square footage by multiplying the length times the width. A lawn or seeding chart will help determine the amount of grass seed needed based on the type of grass you plan to grow and square footage. Draw a diagram with paper and pencil to determine where best to install irrigation so that the soil always stays moist and the new grass is sufficiently watered.

Test your soil, using a soil tester. A soil test determines the pH and organic content as well as the fertilizers and other elements that may need to be added when you till the soil. This initial testing helps avoid the common problems of disease, yellowing, and patching that often occur in new desert lawns.

Apply an herbicide to kill weeds and existing grasses. Using a rototiller, thoroughly till the entire area. Next, add fertilizer, topsoil, and any other amendments according to the results of the soil test. Till the soil a second time through. Rake the entire area until the finest composition of the soil is within the top 2 inches and the lawn area is smooth and level. Do not let the soil dry out before planting.

Separate the seed into two equal parts and adjust the seeder rate on the broadcast seeder so that 1/2 of the seed will cover the entire area. Dividing the seed allows you to make two applications over the planting area instead of one and helps ensure full lawn coverage. Holding the broadcast seeder, spread the first half of the seed while walking horizontally back and forth in even rows. Then, using the remaining half of the seed, make the second application while walking vertically up and down over the same area. Rake lightly over the newly seeded area until all seeds are lightly covered and then water. In Tucson, it’s important to water daily and add fertilizer periodically to ensure a thick, green lawn.