Window well gardening involves planting in the often-overlooked space beneath windows, providing benefits such as improved air quality, reduced heat gain, and increased privacy. Suitable plant species include those tolerant of low light and restricted space, such as ferns, hostas, and ivy. Essential materials include containers, soil, mulch, and lighting systems. Challenges include limited light and water access, which can be overcome with proper plant selection and installation techniques. Expert advice can be sought from landscape architects, gardeners, nurseries, and plant societies.