The month of May is very important for English people. They have festivals in these days. You have a poem about May here:
"The month of May was come,
when every lusty heart beginneth to blossom,
and to bring forth fruit; for like as herbs and trees bring
forth fruit and flourish in May, in likewise every lusty heart that
is in any manner a lover, springeth and flourisheth in lusty deeds.
For it giveth unto all lovers courage, that lusty month of May."
Sir Thomas Malory, 1485
And you can see a maypole clicking on the picture.