Trees

ASPEN

The aspen is a fast-growing tree whose leaves tremble in the slightest breeze due to their flattened stems. A single aspen grove in Utah, named Pando, is a connected clonal organism considered one of the world's heaviest.

ASPEN is the kind of word that shows up in themed word searches like Strands. Themed puzzles group words like this under a shared category — here, Trees.