The other day while eating at my favorite lunch spot I noticed a decaying hemlock with deciduous seedlings growing out of it, a nurse log.

Nurse logs are rotting logs that support tree seedlings. As the old tree decays it creates a seedbed for tree seedlings. The decomposing wood stays moist and provides organic matter for seedlings to grow.
There were Yellow Birch (Betula alleghaniensis) seedlings growing out of a Hemlock log (Tsuga canadensis).

Look through the opening in the brush to find the hemlock trunk on the right behind the stump.

The yellow birch parent grows about 80 feet away.

This nurse log is resting on a rocky ledge while we are in the middle of a drought. The yellow birch seedlings are thriving and show no signs of stress.

Below is a great video about nurse logs for more information.
Next time you’re walking through the forest and see a tree growing on a tree, or a nurse log, take a moment to appreciate the glory of nature.