Because of its aggressive root growth 0447 and rapid

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because of its aggressive root growth04:47and rapid recovery after heavy use.04:52All Bermuda grasses have a special biochemistry04:56that enables high rates of growth04:58when our temperatures soar above 100 degrees Farenheight.05:03For this reason, Bermuda Grass is able05:05to remain healthy and green,05:08even during the desert's hottest months05:11of June, July, and August.05:14However, Bermuda grasses are not adapted05:18to thrive in shade or cold weather.05:21During the winter, Bermuda Grass lawns are05:25typically brown and dormant.05:30In the desert Southwest, cool-season grasses grow05:34from late October, through the winter until mid-April.05:39The common cool-season grasses for winter lawns05:42in the desert Southwest are annual and perennial rye grass.05:48Both of these rye grasses are bright green,05:52fine-textured, and frost-tolerant.05:55
Annual rye grass blades are relatively elongated and weak,06:02and are intolerant of human foot traffic.06:06In contrast, perennial rye grass blades grow short06:12and stiff, with a more densely-matted appearance.06:17Perennial rye grass is also tolerant of foot traffic,06:20and grows in both full sun and light-to-moderate shade.06:23It's for these reasons06:25that perennial rye grass is the preferred grass06:29for winter lawns in the desert Southwest.06:35People receive many social and environmental benefits06:38from having a lawn.06:40A healthy, actively-growing lawn provides a place06:44for people to gather, relax, and recreate.06:48During the hot summer,06:50lawns can create a local microclimate of cooled air.06:55Now, recent research at ASU found that air temperatures07:00in lawn-covered residential backyards of Phoenix07:03during the late afternoons and evenings of summer07:07were as much as 10 to 20 degrees cooler07:10than residential backyards with desert landscaping.07:15Lawns also provide a welcome respite for urban wildlife,07:19especially birds, during hot summer afternoons and evenings.07:27Having a healthy, actively-growing green lawn07:30at any time of the year requires regular mowing,07:34relatively high amounts of supplemental water,07:36and fertilizing.07:38This means that a lawn may not be the best choice07:42for every landscape setting.07:46
The mowing frequency of summer and winter lawns varies07:50according to the grass growth rate.07:53I found that residential lawns07:56in the desert Southwest require mowing once per week08:00during the cooler times of year,08:02and to as often as two or three times a week08:06during the hot monsoon months of July and August.08:11When mowing, remember to never remove08:15more than 1/3 of the grass plant's height.08:20- [Woman] Here's a sustainable tip:08:23Maintaining thick, dense, healthy, and vigorous turf grass08:28will inhibit the encroachment of weeds into your lawn,08:32and eliminate the need for lawn pesticides.08:37- Because of the dry climate,08:39lawns in the desert Southwest need08:42to be irrigated throughout the year.08:45The amounts of water given08:46to any actively-growing lawn will vary depending08:50on the grass type, and weather conditions.08:54Generally, during the summer, when the weather is hot,

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