Near the forest floor (about 50 feet) is a very thick growth of smaller trees that never grow too tall due to the lack of sufficient sunlight.
(Near the forest floor; is; a very thick growth of smaller trees) (smaller trees; never grow; too tall; due to the lack of sufficient sunlight)
Near the forest floor smaller trees
is never grow
a very thick growth of smaller trees
too tall due to the lack of sufficient sunlight