Garden lighting should not require a daily walk around the house with a switch. A well-chosen dusk sensor can turn it on when daylight fades, a timer can switch it off late at night, and a motion sensor or app can adapt it to the household. This guide explains how to plan garden lighting control, how an outdoor-light photocell differs from a basic timer, astronomical clock and smart system, and how to avoid flickering LEDs, false switching and lights left running all night.