As nighttime temperatures in the Southwest start to creep up into the 60s, the Bermuda grass, which has been dormant all winter, begins to wake up and grow. As daytime temperatures exceed 90 degrees, the winter Ryegrass should begin to recede. It is during this transition period where both types of grass compete for space and water. Transitioning from Ryegrass to Bermuda grass is, ideally, a gradual process that typically lasts from the beginning of mid-April through mid-June depending on weather conditions.
The wilting ryegrass may cause you to think your lawn isn’t getting enough water, however, increasing the water supply will continue to nurture the Ryegrass which would make for a more difficult transition period. Be patient...before long your summer lawn will be in full beauty mode, once again.