All haiku must be previously unpublished, original work, and not entered in any other contest or submitted elsewhere for publication. Please follow the guidelines carefully. Publication is defined as an appearance in a printed book, magazine, or journal (sold or given away), or in any online journal that presents edited periodic content. The appearance of poems in online discussion lists or personal websites is not considered publication. Judges will be asked to disqualify any haiku that they have seen before.
Review the full regulations at the HSA website: http://www.hsa-haiku.org/virgilioawards/Virgilio-contest-guidelines.htm.