Something that's not mentioned in the article is the fact that on May 1st, people can sell Lily of the Valley (never knew this word before today) in the streets

Something that's not mentioned in the article is the fact that on May 1st, people can sell Lily of the Valley (never knew this word before today) in the streets of France without licence or authorizations. The flowers has to come from one's garden though, you can't resell.