Grow light fixtures connect to an electrical system and use grow light bulbs or built-in LED arrays to grow plants indoors. They provide light in color spectrums that optimize seedling growth, stem and leaf growth, or budding and flowering. The fixtures are rated for wet locations to withstand high humidity and resist water sprays. Grow lights are used in greenhouses, hydroponic gardening, vertical farming, farm-to-table and urban farming, agricultural research, and other indoor growth applications. String fixtures have a flexible cable to curve along or wrap onto surfaces and hang from shelving, frames, or hooks. Clamp-on lights attach to frames, furniture, suspended ropes or chains, or other objects to supplement light from larger fixtures. Panels distribute light over a wide area and provide the base component of a grow light installation.