Echo Valley 4394 Illuminarie Cosmic Kinetic Spinner Stake, 17.75 by 17.5 by 58-Inch Multi-tiered wind-cups will catch the wind on a gusty day and rotate via perpetual horizontal motion Perfect for flowerbeds, large container plants and gardens Luminescent crystals in the hand-blown art glass globe absorb light energy during the day and release it at night in the form of a subtle green glow Note: For best results place stake in a location where it will receive no competing light source at night. Glow will only occur within the green swirl portion of the globe and is comparable to the glow seen on a watch face piece. Glow will gradually fade over time. Weather resistant electroplated painted copper finish will withstand the elements and provide years of use and enjoyment