Super Short Summary

In Kenneth Oppel's Bloom, three teenagers—Anaya, Petra, and Seth—find themselves uniquely immune to an alien plant invasion that threatens Earth. As deadly plants spread, emitting toxic fumes and devastating the environment, the teens' bodies begin to change. With help from biochemist Dr. Weber, they uncover their part-alien heritage and set out on a perilous mission to save Anaya’s father and stop the invasion. The novel depicts violence between humans and extraterrestrial plants, feelings of alienation, teenagers in foster care, physical alterations, environmental tragedies, abuse, self-harm, colonialism, and allusions to alien abductions resulting in pregnancy.