And if the indicator plants are wilting, others in the area are also stressed, but just not showing it. A frequent light sprinkling may make you feel good about the care you're giving the garden but it is actually a poor way to supply water. A quick spritz dampens the surface of the soil and encourages shallow rooting. You want to soak the ground thoroughly so roots penetrate the ground deeply. If your soil is loam or clay, well able to hold water, once or twice a week will do it.
Sandy soil needs more frequent applications.
Put a rain gauge, or even a clean empty tuna fish can, where the sprinkler is running. Prioritize your watering. Anything that's wilted needs it now. Containers, especially smaller ones and any terra cotta pots, dry out readily. They may even need watering on a daily basis.