Spanish moss

In Mobile recently I noticed that one tree can be nearly covered with Spanish moss, while another tree right next to it may have none at all.

And the moss hangs in batches that aren’t necessarily connected to each other.

Spanish moss isn’t moss at all, and despite its appearance it doesn’t spread like a creeper vine. It’s a flowering plant that produces spores (not sure if that’s technically the correct term) which blow around and grow if they happen to land in a favorable spot, namely a tree where the Spanish moss is exposed to lots of moisture (humidity or rain) and heat.