And Spring arose on the garden fair,

Like the Spirit of Love felt everywhere;

And each flower and herb on Earth’s dark breast

rose from the dreams of its wintry rest.

Percy Bysshe Shelley

April’s air stirs in

Willow-leaves…a butterfly

Floats and balances

Matsuo Bashō

The sun was warm but the wind was chill.

You know how it is with an April day

When the sun is out and the wind is still,

You’re one month on in the middle of May.

But if you so much as dare to speak,

A cloud comes over the sunlit arch,

A wind comes off a frozen peak,

And you’re two months back in the middle of March.

 Robert Frost

The trees are coming into leaf 
Like something almost being said; 

Phillip Larkin

It is spring again. The earth is like a child that knows poems by heart.

Rainer Maria Rilke

Sitting quietly, doing nothing, Spring comes, and the grass grows, by itself.

Basho