Miniature Dollhouse Fairy Garden Glow in the Dark Flower Street Lamp (Pink) Flower measures 1 inch high. Post measures 8 inches high (bottom 2 -3 inches to be inserted in ground). Bottom 1/4 inch of flower blossom is painted with glow in the dark paint. In order for the glow in the dark paint to be visible, the flowers need to be charged by being in bright light - the brighter the light the better. And longer exposure to the bright light helps too. To see the flowers glow, you will need to be in nearly complete darkness. How long they will glow will depend on how much the paint has been able to charge but the glow should last for a few minutes. Only the area around the bottom of the petals is painted with the glow in the dark paint.