After 17 years, Brood X cicadas to emerge in Tennessee for a noisy, speed dating free-for-all The Citizen 5 years ago Brood X cicadas have been waiting 17 years to emerge into the world for four to six weeks of speed dating in 2021 before they reproduce and die. Source: The Daily News Share this: Share on Facebook (Opens in new window) Facebook Share on X (Opens in new window) X After 17 years, Brood X cicadas to emerge for a noisy, speed dating free-for-allDateJanuary 29, 2021In relation toLascassasYes, cicadas are returning to Tennessee in 2021. Find out where and whenDateApril 7, 2021In relation toLascassasThey're no murder hornets, but should Tennesseans worry about this year's cicadas?DateMay 20, 2020In relation toLascassas