Modern Tree

We are as seeds of the giant trees,
and as time grows, so grow do we,
for we are on our way to ether sky,
growing stronger upwards to high;
yet suddenly we cease that blooming,
but continue expanding only wider.  
Year upon year, adding one more layer;
and within that armor, we grow staunch
more impervious to the windy elements
we become hard and cross, unbending;  
now as home both to eagle and to sparrow,
our first purpose a mere cup for our sorrow.