Bermuda is a drought-resistant grass that can withstand extended dry periods. However, this doesn’t mean that you should not water Bermuda grass. How often to water Bermuda grass depends on the season. For instance, this grass type does not need much irrigation during spring unless the lawn is newly seeded. Also, you can water more frequently if there has been an extended dry period. Besides, during summer, you may need to water Bermuda grass about 1-1.25 inches, depending on the moisture level in the soil. See also: Varieties of mondo grass