The frequency of watering your garden depends on several factors such as the type of plants, weather conditions, soil type, and the time of year. In general, most gardens require about 1 inch of water per week, either from rainfall or irrigation. However, it's important to check the soil moisture regularly by sticking your finger into the soil - if it feels dry about 1-2 inches below the surface, it's time to water. Be sure to adjust the frequency based on the specific needs of your plants and the local climate.