Lightning bugs, or fireflies, usually spend the day resting low in tall grass, shrubs, leaf litter, or other shady vegetation near where you see them at night.

Quick Scoop

They are mostly nocturnal , so daylight is their downtime. At night, they climb higher and flash to find mates; during the day, they stay hidden and still to avoid heat and predators.

Where they hide

  • In tall grass or shrubs, where shade helps keep them cool.
  • On the ground or in leaf litter near their habitat.
  • Close to moist areas like fields, gardens, meadows, and stream edges.

Simple version

Think of them like tiny night-shift workers: they “clock out” during the day by resting in cover, then come back out at dusk to blink and find each other.

TL;DR

They do not disappear or go underground; they mostly rest quietly in vegetation and on the ground until evening.