Fertilizer will help the Bermuda maintain its bright green color. For golf courses, keeping the Bermuda grass cut to a consistent height will ensure that it grows consistently and maintains its health in areas such as fairways and greens.
If the average local temperature is above 75 degrees, you should expect potential difficulty with maintaining the color of your Bermuda grass in the colder months. When the average temperature falls below the mid-60's, Bermuda grass will turn a brown or yellow color and remain dormant until the average ground temperature reaches the mid-to-upper 60's in the later spring months.
If Bermuda rough is permitted to grow taller than 2 inches, it could become at risk for contracting disease.