Haiku is a Japanese verse form with very strict rules.

There can be no wasted words in haiku,and the beauty of the result is due to intense concentration upon meaning rather than effect.

Katy Ledin cleverly set out the rules within the structure:

 Haiku Haiku
 

A three-line poem

Seventeen syllables long

- Five,seven,then five.

Here is my Haiku for March
 

 Wild windy weather;

Tossing daffodil-bonnets

Under flying clouds.