Cicada Brood Emergence 2024. Periodical cicada broods will spend over a decade underground, and will only emerge after either 13 or 17 years. One article from the university of illinois extension stated that brood xix, set to emerge in late may 2024, has a reputation for being the largest emergence of cicadas known.

A cicada lays eggs in an apple twig. Where billions of cicadas will emerge this spring (and over the next.