I assume that you mean the poem "In Time of Silver Rain" by Langston Hughes. This is a simple poem that describes the beauty and joy of springtime.
Some of the images in this poem are:
Green grasses grow
And flowers lift their heads,
Lift silken wings
And trees put forth
down the roadway
Passing boys and girls
A couple of interesting notes about this poem:
The word "life" is repeated 5 times.
If you look at how the poem is printed on a page (or computer screen) each stanza looks a little bit like a tree (see link below).