Echo Valley 42193 Illuminarie Garden Critter Potstickers, Set of 3 Glows in the dark; glow duration may last up to 3 - 4 hours, gradually fading over that time Decorative metal and glass stake designed for use in a potted plant or container; Can be used as a support for young starter plants and saplings Luminescent crystals inside the 1.5" glass marble absorb light energy during the day Releases stored energy at dusk in the form of a subtle green glow Weather resistant electroplated antique copper finish will withstand the elements and provide years of use and enjoyment Glows in the dark Decorative metal and glass stake designed for use in a potted plant or container Luminescent crystals inside the 1-1/2-Inch glass marble absorb light energy during the day Releases stored energy at dusk in the form of a subtle green glow Weather resistant electroplated antique copper finish will withstand the elements and provide years of use and enjoyment